5 Reasons You Shouldn't Buy A Turbocharged Car

5 Big Disadvantages Of Turbocharged Vehicles - Explained
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Turbocharged cars used to be the high powered, exotic, lusted after sports cars. In today's world, they're more common than ever. Downsized turbocharged engines allow for small displacement, but still substantial horsepower, resulting in what manufacturers would like to claim as the best of both worlds: both efficiency and power. But it's not quite that simple for turbocharged engines, and there are real disadvantages versus naturally aspirated engines.
This video will discuss five disadvantages of turbocharged cars, ranging from throttle control & turbo lag, to the efficiency & reliability of forced induction vehicles. The throttle mapping, torque curve, cost, compression ratios, air/fuel ratios, and even sound all have dramatic differences when compared to a naturally aspirated engine. Check out the video for all the details!
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[@mennovanlavieren3885]

"I need to shift, but I'm listening to the engine" - valid reasoning

[@johnmoser2689]

Quit beeping at me I'm digging that crazy v8 growl nice

[@Techademics]

See, if he kept the S2000. He could keep revving all the way to 9000!!

[@JoeIsCrazyWillman]

True story

[@duddahgyeah7653]

I can bet that his advisor is a 60 years old mechanic. Most of the arguments brought here belong to the carburetor age.

[@JQB45]

@@duddahgyeah7653 Somewhat valid response depending on which engine you are referring to. 1960's or early 80's?

[@deanjohnson7283]

"its not crazy fast, 0-60 is under 4 seconds" Jason...you are spoiled af :D Everything under 5 seconds is QUITE fast ....

[@caglioso]

Dean Johnson I know right

[@geraldh.8047]

[@meatmissilef111]

I wish they would advertise quarter mile times and trap speed. 0-60 is practically meaningless now that every car has launch control and crazy tires

[@jimcole5359]

Everything under 5 seconds is decent, when you get under 3 seconds it is crazy fast :)

[@John-fz3ij]

Crazy how electric changed the game. In 2010 you had to spend a minimum of 125K* to buy a sub 4 second car (*except for Nissan GTR), for a sub 3 second car you had TWO options, a 500k lambo or 3 million dollar bugatti.

[@liquidh6344]

“It is not crazy fast... uh... zero to 60 under 4secs”.... You daily drive a F-35?

[@hhn2002]

omg i've been binging boostedboiz and emeliahartford channels where the average hp is 700hp up to 1000hp. i get it lolz

[@donniebunkerboi9975]

Supercharged Miata which is about as quick as bag of potato chips powered by 🚀

[@jimaldenmoquete3694]

F35 Pratt and Whitney's engine cant be that great in acceleration

[@bmxriderforlife1234]

Superlite slc. Skip all the stuff and make it cheap. Then dump money in engine and tires and ecu stuff. 2.9 seconds to 60.

[@santaengineer776]

The fact that you drive and explain that long nerdy science at the same time non stop is impressive!

[@HumbleMechanic]

I buy a turbo car then do a turbo delete, then returbo it.

[@johnrice6717]

If it's worth doing, it's worth doing twice... Or sometimes 3 times

[@ghoulbuster1]

anotha one

[@ArchimaXed]

..with a bigger turbo!

[@starvalkyrie]

addict

[@Digidi4]

makes sense

[@bad77dragtruck]

*bolts turbo to 5.3 ls* "what now? I wasn't listening."

[@johnrice6717]

LS + Big Turbo = Maximum Freedom

[@jasonyoung6420]

@@johnrice6717 I'm more an LS + roots blower person, because blower wine is a beautiful thing.

[@armanimckoy2168]

That’s what I was thinking

[@johnrice6717]

@@jasonyoung6420: Nothin against super chargers, but it wasn't a supercharged LS that was the first stick shift GM to hit the 7s

[@ttcherrick]

Jason Young : *WHINE, but I agree, that sound is as sweet as wine. NHRA funny cars are like Bordeaux!

[@billp5656]

Long term a naturally aspirated engine is superior

[@Jasontvnd9]

In what way? Reliability ?

[@mvnorsel6354]

I agree, like being single, less stress, less things to go wrong.

[@lockinhinddanger934]

@@Jasontvnd9 I mean yeah mainly reliability... Also some older turbos REQUIRED midgrade or premium gas and more expensive oil.

[@Jasontvnd9]

@@lockinhinddanger934 I always find it strange when you say midgrade gas but it's cause I'm from the UK , Our lowest gas is 95 octane with premium generally 98-99 octane. Same with oils just about all our oil is fully synthetic since we change ours once a year.

[@gj91471]

@@Jasontvnd9 you think it's fully synthetic but it's not. Only Amsoil and Redline make 100 % synthetic.

[@muskreality]

It's now becoming the standard for cars to have 1.3 - 1.5 litre enginee plus a turbocharger.

[@jerk5959]

Sadly.

[@Salmon_Toastie]

Everything is basically a rally engine now. 2.0 seems to be the max of most cars nowadays.

[@andrews7517]

Smaller cars in Europe now have 1-litre 3-cylinder engine, plus turbocharger!!! 110 PS (81kW) (VW Polo TSI) My 10-year-old equivalent was 4 cyl, 1.2 litre, 105PS (75kW)

[@adityarastogi5420]

Yes, it feels so bad! You can't even go above 100kmph. If you do, you hear the turbo ranting throughout after that :( Where's the 3 litre naturally aspirated?

[@SadMan-pw6ge]

Agreed, I just worked on a mercedes c class "AMG". For an AMG car its quite sad to see a turbocharged inline-4 sitting there. The owner said he opted for the best option

[@trymonster6670]

rotors & pads replacement for this lexus costs more than scotty's toyota celica

[@wyndhamcoffman8961]

Yeah but you got to admit that Scotty's Celica is a more practical car. Jason only drives sporty stuff.

[@MrChrisproductions]

BS... As a RCF owner, I can 100% say that replacement rotors are $100 each, pads are $300-700 for the set depending on the grade of pad. Compare the pads on an RCF to a C63... Good luck.. Lexus cost a tad more then Toyota's to maintain.

[@nickolastiguan]

MrChrisproductions 🤦‍♂️

[@lllowelll]

@Frost Bite 400

[@NikChristo]

@@MrChrisproductions how much do you think Scotty's Celica worth???

[@evergreatest7644]

EE: You shouldn't buy a turbocharged car Me: Alright, I will buy a supercharged one.

[@davidl.5335]

Next upload: Why you shouldn’t buy a supercharged car.

[@LessThanPeachy]

Honestly I think supercharged cars sound better than turbocharged ones. It doesn’t take too much of the original noise from the engine, it keeps the feel of it, you get that added whine of the supercharger, and of course power to match.

[@TruVice718]

Jordan Nolan whining lol. Just like in children, I prefer not to hear it. Turbos are pleasantly disrespectful n I love it. Snorting, sneezing and spitting at other vehicles.. 🤣🤣

[@xx_weedman420_xx4]

So three turbos small mid and big when hit ????rpm then mid turbo comes and so on right?

[@ericlotze7724]

t w i n c h a r g e r w i t h a m b i e n t b y p a s s

[@mi626]

You have the best background of any video! You are like on vacation all day everyday with those kind of roads. The information you are giving is a bonus. I am simply enjoying the ride. Thanks.

[@Lurrkiing]

I recently bought a new civic SI with that 1.5t mostly bc it was cheap and a manual and cool. I didnt realize I loved the turbo kicking in till I've driven it 3k miles. I love it when that acceleration hits and my steering wheel wants to go nuts and my car wants to generate lift. Turbos are fun man.

[@BirdiesGoCherp]

1 reason to rule them all: Mo Powa baby *wrong channel, sorry*

[@nicosmind3]

Clarkson approves of this comment

[@eddymison3527]

bahhhhhhhhhhhhhhhhhhh

[@BirdiesGoCherp]

@@eddymison3527 VTEC Yo

[@Menace_sti]

And hrspers

[@beltranperez378]

*LIGHTNING, LIGHTING, LIGHTNING*

[@danielslobodyanyuk6067]

“This is America I want it now” I died 😂😂😂

[@santibanez91]

**freedom intensifies**

[@MultiLuispo]

Its my money and i need it now.

[@daveybernard1056]

it's funny cause it's true

[@F1fan4eva]

Unlike the rest of the world's where they don't want it right then.

[@morishogo144]

Yeah it's truth, you invent an attack on your state and then go to other states that have a lot of natural water and oil and kill them all because you want that.

[@michaeldavidson8971]

Screw turbo-chargers! I want a car with an engine that will last 300,000 miles.

[@rars0n]

Then you want an older VW 8v or 16v engine. My '91 Jetta GLI has 330k miles on it. The head has never been removed. Other potential alternatives: Ford 300 cubic inch straight-six, Toyota 1UZ-FE (there's at least one with over a million miles), and probably at least a couple others that I am forgetting about.

[@prashanthacharya7289]

2011 model 528i inline engine crossed already 4,50,000 km and still running

[@ham7357]

3.4 v6 2003 Tacoma I’ll be at 300k next oil change. I love that old truck but I do want something new…. I just can’t bring myself to blow the money when I already have a reliable vehicle that I’m not gonna sell

[@rars0n]

@@ham7357 I'd keep the Taco until it dies... which will probably be a very long time!

[@gtzemis1]

If you’re not economically well off or don’t know how to work on your own car don’t buy a turbo you aren’t capable of taking care of one and it will cost you.

[@Chimpy_Mc_Gibbon]

You definitely need to impersonate blow off valves more often. I propose that it becomes your new intro.

[@mattelieson4395]

That needs to be the KZbin notification sound when he uploads

[@miffedmax]

Or at least make it available as a ringtone.

[@markproper9791]

He was actually impersonating the sound a turbocharger makes when closing the throttle without a blow-off valve installed (off throttle compressor surge). blow-off valves make whoosh or pshhh sounds.

[@maximumvelocity6542]

@@markproper9791 there are BOVs out there that are "sequential" such as some HKS and Greddys and do indeed make the exact sounds he makes. Understandably, they're often confused for compressor surge.

[@gerRule]

9:21

[@MrStickyPete]

This is why Im going to wait for the naturally aspirated Taycan

[@bitkahuna]

that'll be a long wait, lol

[@beetleything1864]

🥴🙃🤣👊🏻👍🏻🙄

[@davidm5707]

Hummmm....

[@102wingnut]

Actually the Taycan is a Turbo. It says so right on the trunk so....

[@rtx_____]

It has a Turbo Trunck, which has a worse opening/closing response rate than a naturally aspirated trunck.

[@warpdriveby]

I've loved turbocharged engines after buying my first car after college, it was a Saab 9-3 aero, and at 205hp/230lbft and relatively low weight of 2850lbs it was quick in 2001.

[@TheExcessive1]

It would have been interesting if you had also talked about mean air density. I live at 5000 ft, so all things considered, a normally aspirated engine puts out about 15% less horse power. Whereas a turbo or super charged engine can maintain rated horsepower at elevations of about 8000 ft before they start to loose power.

[@MrComradebuttons]

This I always loved na buuuut I live in bc and losing more power the higher you go mean while the road is getting steeper and more curves lol bought turbo much more consistent in the mountains for sure

[@dazeen9591]

5000ft?? The highest point here is like 2000ft above sea level and I personally consider that already to be extremely high since I'm used to driving only 130ft above sea level.

[@realtruenorth]

Yeah but the air is much colder at 5000 feet than down in the city so, that helps make up for it.

[@mikemccormick6128]

@@dazeen9591 Where is here, exactly? Denver, CO is 5,279ft above sea level.

[@Subpac_ww2]

Which is why a Swiss developed the first ever turbo for an aircraft and it went to 13,000ft and the pilots eyes froze shut. He landed it, blind, and rather than baulk about almost dying he immediately announced the success of the new device and how it vastly improved his aircrafts performance. The rest is history.

[@MaizaHyodo]

I myself ride a turbocharged vehicle every day. Sometimes it's my car, sometimes it's the bus.

[@nordic5490]

Maiza Hyodo my daily drive is a 800hp turbo barra Falcon, or a turbo bus.

[@AJ-xm4xc]

Do tell....

[@MistahWorldwide]

“This is America. I want power and I want it now!” The energy in that has more heat than most turbos

[@yorao]

That's what Trump said :P

[@nthgth]

If that's the case, then if all the turbo lovers who claim "there's 'virtually' no lag!" were right, they'd be hugely popular with that type of American

[@jaymie_denardo6556]

You should do a video on blow off valves and where to mount them. There has been a debate on mounting the blow off valve in the hot side piping vs the cold side piping and I think a lot of people would really love to hear what an engineer has to to say about the issue. Regardless if there is no difference. Or if there is a minimal difference.

[@wwiking8055]

It depends where the air related sensors are in the car

[@sethschober4596]

Excellent video, gotta love the immediate throttle response of a good NA v8. Around 7:10 I think you may have a misunderstanding though. I don’t think the lower Static Compression Ratio (total volume at BDC vs total volume at TDC) manufacturers quote for turbo engines will actually hurt combustion efficiency. The reason being, the engine sees total, or Dynamic Compression Ratio (air density immediately before combustion vs atmospheric air density). Even though turbo engines tend to use lower SCRs (e.g., 9:1 instead of 11:1), the air has already been compressed by the turbo before it enters the combustion chamber. I think that would make up the difference. After all, the final pressure and chamber surface temperature right before the spark ignites is your limiting factor for a given octane fuel. In fact, using an intercooler will effectively compress the air further, enabling you to even get a higher DCR with a turbo engine than an NA engine. However, most of what I’ve just said goes out the window if a manufacturer’s tuning program cuts boost at low load to improve fuel economy.

[@joopie99aa]

I think thermal efficiency is mostly a function of the compression ratio (or decompression) during the power stroke. For ideal efficiency, you want the air in the cylinder to be at ambient temperature and pressure at the end of the power stroke. Any additional pressure and temperature is dumped through the exhaust and wasted (a turbo recovers some of that energy for powering forced induction, but that isn't power to the wheels). This is the idea behind the Atkinson cycle: a larger ratio is used during the expansion stroke than during the compression stroke, allowing the air in the cylinder to come closer to ambient pressures and temperatures, leading to greater efficiency. Forced induction and the resulting lower compression ratios do the opposite: the pressure and temperature at the end of the power stroke are increased, so there is more wasted energy, so lower thermal efficiency.

[@confidentlocal8600]

@@joopie99aa I have a Toyota V6 that runs in Atkinson mode at low load. It's a great compromise that gives real fuel economy benefit. I much prefer it to a small turbo engine or clumsy cylinder deactivation.

[@ryfel99]

That was a solid "tu-tu-tu-tu"! Marty and Moog would be proud.

[@M-N00]

a mighty tu tu tu

[@lil.mountenlighting7682]

Rose's are red violets are blue I like cars that go tu tu tu

[@MrFloydroy]

“0-60 in under 4.2 secs, so it’s not crazy fast. But its good.” Lol

[@amiladrck]

I was looking for this comment

[@V4zz33]

As a biker: "What's so special about it?"

[@DrPacman]

@@V4zz33 airbags

[@GOHST13ly]

@@DrPacman bruh 🤣💀

[@josearmandoguerrerochairez3454]

@@DrPacman You can have a full Kevlar vest, and airbag jackets, and you can walk off pretty much unharmed if you don’t get rolled over, and you have a chance of your bike not being wrecked up.

[@tr3ynag4ta]

I agree with all but point 5, I put one on a RB26, instant happiness 💯👏🏿 reliability is a *MASSIVE* factor for me, I want the car (especially if its one of my favorites) to last as long as possible, and if its boosted, then the longevity is reduced.

[@eurogryphon]

Jeremy Clarkson once showed the difference between NA and turbo lag on _Top Gear_ by racing a minivan against a Mitsu Evo FQ400. Both were in 6 gear at a matching speed, and both floored it. The minivan pulled away whilst Jeremy was sitting there waiting for the turbo to spool.

[@swansmeister]

Yeah you take the worst car in history as an example, also Jeremy always exagurates on everything.

[@TimpBizkit]

Just floor it and press the brake for a couple of seconds then release the brake at race start

[@ARealbigclub]

WTF floors it in 6th gear lol, absolutely ridiculous.

[@or2kr]

That's not lag, that's boost threshold. The Evo is obviously losing to a short geared minivan if it is before it even has a third of its torque in a gear that gets it to the much higher top speed

[@James-ns6jm]

engines getting smaller with less cylinders and strapping a turbo on to make up the power. Rather than giving us bigger engines strapped with a turbo.

[@Kocan7]

To be fair, it's way cheaper to extract more power from turbocharged engine than it is from NA. For most of those just remapping them can give 30-50BHP, and way more than that with things like bigger IC, downpipe and air induction system. Even hybrid turbochargers cheap compared to turbo/supercharging NA engine.

[@102wingnut]

There are advantages to both. I love my 1.8 TSI that gets 40mpg on the highway and 35 around town but has the torque and power when and where I want it. If you know how a turbo works there's very little lag as long as you anticipate the need for the boost

[@sketchyssk8shop]

Make up the lost hp?!? Todays turbo 4 bangers are outdoing old big blocks in power and fuel economy. My ford escape has almost the same power aa my old 2v 5.4 expedition

[@jeffreyreardon7487]

@@102wingnut I agree mate. My turbo 2.0l in my genesis coupe gets 32.4 mpg when I go on trips. But has 276hp when I ask for it. Small, turbocharged engines are the way to go. Best of both worlds

[@102wingnut]

@@jeffreyreardon7487 awesome! Yeah for us that's definitely true.

[@wg5768]

Wow,an engineer without an ego who's honest and can speak in layman's terms.

[@fbetti9]

I wouldn't say Jason has no ego, maybe he's got a "correctly sized one" (provided there is such thing?!?) 🙄 The best part is that it seems that he's both got the knowledge and loves what he does 😁

[@martinxXsuto]

such a thing doesn't exist. I'd know, since i'm studying to be one

[@pycanthusderossi4665]

Those that can't explain something in layman's terms probably don't know the stuff good enough and use too many specialty words to conceal it.

[@BaddaBigBoom]

My (2006) Subaru Forester has a "downsized turbocharger" ...which is nice to know. It also has a _recirculating_ blowoff valve and the previous owner replaced the intercooler with a larger STI one, so temperature should be handled a bit better.

[@supradoom]

I just want to thank you for this video and your power isnt everything video. Big inspiration for the car I'm doing now.

[@twowheellifemagazine3583]

It was a beautiful moment when you flashed "fewer" to correct your grammar after saying "lesser".

[@anthonyc1883]

Yes! It's a small distinction, but a correct one. Less people attended the concert? No, fewer people attended the concert. Very common mistake (and I am definitely NOT some nanny about grammar, calling people out. It's just nice to get it right).

[@kevinclass2010]

It's a made up rule. The old Anglo-Saxon Kings wrote used "less" for items too: Swa mid læs worda swa mid ma, swæðer we hit yereccan mayon.

[@methos-ey9nf]

Drax: That's a made up word Thor: All words are made up

[@jp8628]

"More faster" at 2:38 though...

[@caglioso]

Good call. Appreciate the grammatical correction.

[@ClaytonMacleod]

I like how you care about less versus fewer, but “more faster” is perfectly fine. Hehe ;)

[@jaydenjohner6901]

He could've worded that more better

[@justarandomguy3969]

lol i also noticed that XD

[@robogiraffe]

It's not necessarily incorrect. It just needs a comma: "spools up more, faster" (more or less short for "it spools up more, and it does so faster").

[@07acanoia]

Andrew Garvin you would be correct... if he added the correct punctuation...... but he didn’t. So no, it is not technically correct.

[@kaptinkeiff]

@@07acanoia He didn't say it was technically correct. He said it was not necessarily incorrect.

[@piergraham4181]

Love the channel Jason. I am going to buy a WRX and my question is what brand of oil should should I use on it and how often should I change the oil? I've used mobile 1 synth every 10K on my other cars.

[@tjacobs116]

great points! thank you for making this video

[@m8eee]

"this is america" "i want my power now"

[@ramrod126]

JG Wenturbo..877 POWER NOW!!!!!!!!!!!!

[@Sens23Bruins]

Should be: this is america I want more powaa!

[@5t3v3n12343211]

It’s my power and I want it now!!!

[@joeysparks971]

More power babbyyy

[@randomrg4637]

joey sparks mo POWAh baby?

[@forrbyc1508]

His impression of turbo noises was the best part of this video 🤣🤣

[@DoubleClutchAutoReviews]

forrby c Personally, I think the NA V8 impression was even better 10:28 "ommmmmm" haha

[@ryanmcmanus8408]

Doo doo doo doo 😂

[@silverace08]

@@ryanmcmanus8408 wow wonder why my turbo does not sound like that at all lol.

[@this446]

Thank you for sharing the knowledge!

[@BaieDesBaies]

Dude, your channel is super cool. Very instructive, clear and with good dynamic and nice pictures.

[@trashcan9615]

I don’t think we worry about fuel economy when we’re at 100% throttle.

[@stevenly4085]

Especially on something like e85 lol

[@carlosanderson4479]

I'd appreciate a 'Why not to buy a supercharged car' video if you haven't yet.

[@jaydunbar7538]

Superchargers are very inefficient, that's basically it. Great throttle response as the trade.

[@hitmixhyepock9405]

@@jaydunbar7538 except it has throttle response, it has boost when you want it and no boost when you dont.

[@prodbybigl]

Jay Dunbar right even tho a centrifugal supercharger is still a supercharger I’d rather go with that than a twin screw

[@jaydunbar7538]

@@muskokamike127 superchargers actually have much more heat where it matters, the massive inefficiency is shown by intake temps being crazy without some sort of alcohol injection. Banks power actually just did a video on this not to long ago.

[@s0meguy809]

@@jaydunbar7538 A lot of superchargers are intercooled. Typically water-air but some centrifugal superchargers use air-air units.

[@Stuboi0]

Listening to this video, you get two ear-gasms... Jason nerding over engines. That Lexus!

[@jestronixhanderson9898]

I drove a ZM3 and that engine was one of the nicest NA engines I’ve seen. Power everywhere, it was way more fun than a quick 2 litre turbo.

[@ARealbigclub]

236 kw and only 350 nm of torque from a 3.2 6 cylinder isn't very impressive though, Turbo it and it'll have properly 100 kw more and double the torque, there's nothing N/A wise you can do to match that power.

[@thegrmcrckr488]

No such thing as a quick 2 litre turbo...I'm thinking you don't really know what quick is..... Not being mean, Im just saying.

[@MrWaheedulHaque]

470 hp its not crazy fast he says My car only have 122 hp 😢

[@robertjusic9097]

I drive my moms peugeot 107 from 2007 with 68 hp and tires that couldn't grip a falling ant

[@davideaezakmi9530]

Bruh my car has 70 Hp

[@jaydunbar7538]

Power to weight is far more important then raw numbers, power that low I imagine your driving a tiny eco box.

[@MrWaheedulHaque]

@@jaydunbar7538 true my 122hp car is rapid only cos it light weight haha check it out on my channel

[@BrokenKingpin]

Yeah I don't get how a car that does 0-60 in under 4 seconds is not consider crazy fast.

[@musicalbenjiman]

Speedometer blurred out at 10:18 - you know how much fun he's having!

[@alexc6946]

Awesome explanation!! Thank you for the video

[@orion4480]

You should have more subscribers. You're a genius (duh!). I may not be a subscriber, but I do watch your videos from time to time. Each time I do....you're spot on. This video proves your point.

[@gqh007]

Ah yes the typical flames out of the cold side of the turbo stock image

[@TheOriginalEviltech]

The air coming out of the cold side of the turbo is pretty hot though... Over 100 deg C at full boost.

[@gqh007]

Eviltech word

[@Professor_Raiden]

Lol

[@joshuahelgeland814]

The cold side is pointing up to the left a bit....

[@theovandaele3220]

Hey, if your K&N filter is on fire... don't knock it! (I said knock...)

[@jonathandilin5301]

“This is America!, I want it now” Lol love it

[@ComeBackKid1]

North America or South America?

[@WMithrandirXbox]

Ahmeddeeka!

[@michaelsprinzeles4022]

Another great video. I don't usually comment but truly enjoyed how you tried to use the word "less" fewer times;)

[@hrscockroach8285]

Perfect video, Love how you don't present these as fact but more of an argument!

[@michaelblacktree]

REV UP YOUR TURBOS!!! oops, wrong channel 😝

[@Creeperboy099]

m.blacktree turbos don’t rev- they spool lmao

[@TheSingleTrucker]

friends he's copying a quote and adlib the last part. So it is rev up.

[@TheSingleTrucker]

Well played!

[@Digidi4]

it's an endless muneypit

[@GriffyBoiii]

Yahhhh

[@StatusQuo209]

Man I love the sound of turbos with a cold air intake. That induction noise and that sound while the boost ramps is addicting lol. Great video 👍

[@johncoleman5388]

I like that he emphasizes "delay". I do not know about others here, but I presume it take 1.0 seconds or less to reach a turbochargers rpm power band. It really depends on the turbocharger setup. NA motors are awesome, but if you want the crazier power numbers you need forced induction, unless you happen to be the happy owner of a 9.0L viper or high end Ferrari.

[@Poverty_Welder]

High end Ferrari? Like their is any other kind of Ferrari

[@islandon22]

That was a pretty comprehensive dissertation. Thank you.

[@mrgarrison3516]

Cars of the future 1 liter 3cyl engine with 10 turbochargers 😂

[@bonk841]

what? not ev ?

[@jackradzelovage6961]

@@bonk841 two of them will be electric for less turbski lag XD

[@victortitov1740]

Better have JUST a turbocharger with a combustion chamber. A jet engine, that is.

[@martintaper7997]

that's now for some ...but maybe not that many blowers.

[@jaromirandel543]

Car of "future" is Variable geometry turbocharger pre-spooled by electric motor.

[@Fireguy1962]

Tried driving a diesel truck without a turbo. You’ll never question if it should have one or not.

[@kenkalajdzic]

Diesel are another story. There are good NA gasoline engines, can't say the same about diesels ...

[@nordic5490]

Ken Kalajdžič nope. The principles are the same with petrol. All 2019 petrol turbo cars are 11:1 compression ratio hence great low rpm throttle response.

[@Rob-326]

@@kenkalajdzic I have a neighbor that has a diesel engine that is NA... TSI or whatever it's called... Don't know how well it works for him... But I do know that it's battery died a few times... It was in the winter...Didn't happen on ours...and our car is a TDI. :D

[@jets8991]

Gm's old 6.5 is a great example.

[@mikemccade6657]

without the turbo your looking at 45mph tops.

[@maverickscraziness8691]

Thank you for sharing this knowledge. May I know if this is still applicable for the not high performance day to day use car with a small 1.2 L, 3cyl. engine with an occasional highway rides?

[@teop7887]

I have a '19 F150 3.5 Ecoboost. I love it. In Eco Mode with the 36 gal. tank, I get 600+ miles on the highway, and in Sport Mode, it's an absolute beast.

[@aygwm]

It’s funny how the pitch and enthusiasm of Jason’s voice has increased over the years. We are at peak Jason

[@quintonvongpanya5669]

He's at peak torque

[@starvalkyrie]

"This is America, I want it now" someone clip that. I need the reaction video.

[@kibawhitefang7176]

I know right? Let's keep it that way, mate. lol

[@Dptl]

All in all.. I understood everything..great explanation.

[@ryanpope4124]

Very educational. I am not an engineer, but the explanations provided make logical sense. Good to listen to someone break down firing, cylinders, turbos, in a fairly easy to digest fashion. I would also -- does a very good job of pros vs cons.

[@thegrmcrckr488]

I won't buy a vehicle that is normally aspirated anymore. I love my Turbo'd and supercharged engines.

[@AlanTheBeast100]

Nitpick-of-the-week: Jason: in your throttle/torque graph it should be throttle on x, torque on f(x), IMO.

[@YouPlague]

I like you

[@SangheiliSpecOp]

@@YouPlague I like you for liking him

[@keijokojootti7790]

Unless... Inverse driver wish map... Nah. I'm with you on this.

[@Vijimn1]

@@SangheiliSpecOp I like you for liking him..

[@SangheiliSpecOp]

@@Vijimn1 i like you for liking me for liking him for liking him

[@djathens]

I see you're driving up to Larch Mountain, I love it up there! So close to town, but a quick getaway into MHNF. Great videos!

[@FloridaDeere]

I so agree with all, my regular, stock, unexciting 5.0L in my '13 F-150 sounds super awesome when under throttle. Also more reliable because simply just less parts to replace. Not knocking turbos, they are super cool too, but just responding to another of your cool videos.

[@jeffkoe310]

The Ford 1.5 L Ecoboost engine in my Fusion seems to be pretty good with instant boost, and it gets really good gas mileage when you’re easy on the throttle.

[@victorgirouard1543]

This guy talks out his butt have of what he said about turbo engines is dead wrong!

[@victorgirouard1543]

@reshi p you are wrong I work on a fleet of over 30 Ford f1 50 with the 3.5 ecoboost and 4 have well over 300k and the rest have over 200k on them all running like new.i have been in the field over 20 years change the oil often with good oil and they will last! So next time before you comment on something you clearly don't know crap about do us all a favor just go ahead and stick your foot in your mouth! And the best part they all have original engines and turbos imagine that.

[@robertmills794]

Manufacturers love turbo's because they can claim CAFE standards within the fleet. Easier to make a car that gets good mileage when not pushed hard, which is what they care about.

[@nordic5490]

Robert Mills turbos are better fuel economy, better mid rpm torque where people actually drive, in 2019 are all 11:1 cr hence great throttle reponse. Turbos dominatw all classes of motor sport where they are allowed. All commercial vehicles are turbo with turbo trucks typically doing 1M kms between rebuilds.

[@Appletank8]

IIRC turbos are great at economy ... But only when you're babying it because you're basically running a tiny NA engine. When you put down power, well now you go from 2 L to 3L and it eats fuel accordingly, and then some to keep cylinders cool.

[@chrisbailey4759]

In the early 80's I had a Mk1 Ford Escort, it came with factory fitted delayed action steering and breaking system, fun times indeed.

[@drakedbz]

I drive a 2018 wrx, and I can definitely say the throttle is basically an on/off switch. It's very difficult to drive the car "normally". The slightest pressure and you're hitting boost. Many modern cars have a more sensitive throttle than I'd like, but the wrx takes that to the extreme. My previous car had a mechanical throttle that gave you tons of room and a smoother response. I do like my car, but they could have tuned that throttle to be a bit less sensitive.

[@SteveComputerFix]

As a 21 WRX STi owner. I agree with this. It like either on or off. Unless you want to get up to 35 mph in like 15 seconds

[@richardschnoor6995]

As a fellow ME ( PhD in 85) who has built 5 turbo installations from scratch I will generally say your videos are pretty good. & granted pressures are higher as you said but you forgot one big fact. Gas runs by burning ( unless detonating) & diesels run by explosion. Big difference with regards to shock loading the engine components!

[@nthgth]

Could you explain? Seems like they both combust, creating pressure, pushing against a piston. Where's the important difference between burning and exploding here?

[@thejoker6243]

and what? it's not like all turbos use gas while all naturals are diesel, or is it? no idea what your point is about

[@fishgeralding9224]

@@nthgth a gas engine uses spark, at a specific moment, to ignite the charge. If the initial compression ratio is too high, it ignites the charge due to the heat created by compression, too soon. This results in the charge detonating before the piston reaches top dead center where it's supposed to fire. Therefore you have pressure trying to push the piston down, on it's way up. This, at the least results in "spark knock". At the worst, it "hand grenades" the engine. A diesel engine relies on compression detonation, through compression, to fire ,or detonate the charge. That's why a diesel can handle boost at much higher compression ratios.

[@JoeHamelin]

And this is why I love my 3.6R Outback. Such smooth power whenever I ask for it.

[@davidhuber6251]

Such a beautiful drive up to Larch Mountain(?) Couldn't hurt to show a few seconds of the view at the top! Another great and informative video.

[@antor.j.medrano]

Only thing I love turbos in is ah diesel engine.

[@volvojohn9036]

IN THE 1980"S TURBOS WERE STRICTLY OIL COOLED AND WERE REPLACED (TYPICALLY @50-60,000 MILES ON VOLVOS) WITH TURBOS (NEWER FACTORY DESIGN) THAT HAD A WATER JACKET AROUND THE TURBO AND WE NO LONGER HAD COKING (OIL BURNED TO CARBON) ON THE BEARINGS, DOUBLED THE LIFE AND THE BOOST.

[@gradywilson9213]

Never been fond of turbo on a daily driver, and that's all I can afford daily driver, highly educational I am a big fan thank you.

[@paulfairchild8942]

Congrads on being featured in this month's Car & Driver magazine. Hope that leads to an up-tick in subscribers, it's well deserved.

[@davepianist84]

I've no idea where are you driving at but it's a driver's paradise! Thanks for the video I was so jealous of turbo cars until now 💪

[@alanphillips4431]

Would there be any advantages to a separate oiling system for lubricating and cooling the turbo? Try to decouple the turbo heat from the engine if you can.

[@heybird5660]

Most new factory turbo,s are water cooled.

[@CaramellsutraA]

name of the title should be: "5 Reasons You Should Buy A Twin-Turbocharged Car " due to the graph shown at 3:45 ;)

[@Arakij11]

Or even like a BMW with 3 turbochargers. One for low rpm, one for mid rpm and one for high rpm (I think it's a BMW but im not sure anymore)

[@CaramellsutraA]

@@Arakij11 Yes, u mean 2012 BMW 550d series with a 3L Diesel tri-turbo 381HP. There´s already the 2017 version of this car with a quad-turbo built by Borg-Warner. A few more generations and this car has more turbochargers than cylinders haha

[@Rob-326]

@@CaramellsutraA Why not a Lancia Delta S4? Rally car? Check. Group B? Check. Twincharged madness? Oh we got plenty of that.

[@poisonpotato1]

Why not just replace all cylinders with turbines. Bring back jet cars

[@Rob-326]

@@poisonpotato1 Because you press the gas pedal today...and it actually accelerates tomorrow?

[@microdubber]

Living here in Singapore I lust for the roads this guy is driving on...

[@MrLordZenki]

Don't feel bad, I live in USA but in a dense metropolitan area, and I also lust for the roads he drives on.

[@mwsc]

​@@MrLordZenki I live in NJ next to NYC and there are plenty of open Highways and Interstates to cruise around. I used to live in Kansas City and I've driven across the states to Southern California as well as three trips from Midwest to North East. There are so many nice roads in Colorado, Utah, Nevada, Pennsylvania, and southern states.

[@do_not_rotateyour_phone3957]

These type of roads are pretty dangerous too. These are prone to deer crossings that can turn your enjoyable ride into a nightmare..

[@uptorest]

Johor

[@sexysilversurfer]

Roads maybe long but what about speed limits and speed cameras, Germany has those no peed limits autobahns.

[@bwdrives]

Natural aspiration just gives you a nice connection to the car in my opinion. It’s probably the sound and the throttle response that makes you feel more in control

[@gravyboy69]

I own a 2021 Hyundai i30N 6sp. It amazes me how good it is in almost every way. The boost builds very quickly to 20psi and then eases off a tad. This gives great low end grunt but is less rewarding when pedalling it. I used to own a Lotus 7 replica turbo, and with a fully programmable ECU I could let the turbo produce more boost as the revs increased. It felt more like a N/A motor and pulled hard to redline. In effect you hold back the boost in the 3000-5000 rpm on purpose to make it feel like an increasing rate of acceleration. Will always miss the performance, replaced with a family car (505 Ci Dodge Challenger). That carb gives unbelievable throttle response!

[@vitaminb4869]

I drove a stock 2019 Mustang with 4cyl turbo engine. You couldn't tell it has a turbo. There was no lag or extra noise from the turbo. It didn't run some crazy temps and I was getting 24mpg on 87 fuel. Everything was so smooth, I loved driving that car, it was a lot of fun. Obviously 5.0 would be even more fun to drive, but now we're comparing apples to oranges.

[@SavingPvtBryan32]

Cevair Zufer how is it slower in corners? Do you have any idea what your talking about or are you just a 4cyl mustang fanboy?

[@celderian]

@@SavingPvtBryan32 Well the 4pot is lighter but with modern tire and suspension tech, it doesn't really matter.

[@tayweijie7982]

That 4 cylinder turbo that ford made is actually quite powerful but be careful when driving with 87 fuel, u put full throttle u will destroy the engine due to knock and the engine will also be derated slightly when running 87(knock sensor)..... Try running it on 89 it be the best combo against cost of fuel and performance

[@danielrocha-garcia8609]

Wait the ecoboost Mustang only gets 24mpg?? I hope you’re talking about city driving because it’s common now days for a V8 engine to get at LEAST 20mpg AVERAGE

[@vasilis23456]

@Cevair Zufer yes the engine totally affects the traction of the car.

[@Westcoastwindsurf]

Great video! Most modern manufacturers though, use twin turbos or even twin charging (turbo and supercharger) to give you better response with minimal turbo lag. I still like my NA v8 :)

[@rjdavis7503]

The ecoboost uses twin scrolls, One turbo housing.

[@rstoud]

My 2015 Volvo S60 T5 has no turbo lag. It makes peak torque of 260 lb-ft by 1500 RPM and keeps it all the way up the range. The exhaust headers (yes, steel headers) and turbine housing are the same piece and manufactured as part of the turbo.. it placed right next to the head. It has dual inlet channels from the headers. The engine is direct injected. It spins up instantly. As far as longevity...my last Volvo s40 T4 was running fine at 250,000 miles when I sold it as well as my Saab 9-3 ARC at 250,000 miles when I sold it.

[@annurch558]

My daily driver is a turbo 2 litre four. It’s my 3rd turbo vehicle. I’m very happy with turbocharged engines. The only one I had problem was a VW Jetta and that was the DSG, which was not fit for purpose. Lag was an understatement.

[@ramrod126]

I would be very interested in a video comparing turbo vs NA fuel economy at the same horsepower rating. For instance, take any Ecoboost and compare it to something with the same horsepower that is NA.

[@torod213]

My 182hp 1.5 turbo Focus uses at least 35% less fuel than my mom's 160hp N/A 2.0 Mazda CX-5. So.... There's that.

[@jevgeniardassov]

Now try that at around 5500 rpm, then it's a different story. There's always two sides.

[@TheSingleTrucker]

It really depends on the driver. A driver that let's the turbo(s) and transmission do all the work will see better fuel economy.

[@BugMagnet]

@@torod213 You are alo comparing a compact car to an SUV, but the turbo still helps.

[@torod213]

@@BugMagnet *wagon to an SUV, but yes you have a point. It accounts for some of the difference, but far from all of it.

[@papa_pt]

@2:29 yes but here it's like delayed gratification. Because when the boost comes on it's gonna hit with 2x the torque of the NA engine

[@102wingnut]

@Jose Martins no that's about right depending on your turbo setup.

[@102wingnut]

Not to mention traction issues.... Floor it, get rolling a bit and as the tires get moving the torque ramps up. Just like a multi-stage drag setup.

[@102wingnut]

@@muskokamike127 ok good point. A turbo will give you 2x Torque of the same engine N/A. You CAN however build a small displacement Turbo engine that will give you the same or higher torque as a larger displacement NA engine.

[@102wingnut]

@Jose Martins just as an example my last car was a 1.8L that made 100hp and 105ft-lb. My new car is a 1.8 turbo that makes 184hp and 199lb-ft. The torque band kicks in at 2500rpm and is pretty flat up to redline. I know people have upgraded the turbo and tune to get well over 200hp. Oh and my new car gets 2mpg less on average than the old one. Still get 40 mpg on the highway.

[@102wingnut]

@Jose Martins no it's two separate cars the new one is a Golf TSI. I understand it runs about 11-12 psi. I'm still running it stock with no mods so far. Maybe a tune up in the future... Once the warranty runs out lol.

[@saisrinath2483]

Hi Jason! My huge thanks at first place for your wonderful videos. I need to ask you a question that has been nagging me for a long time now. Why do we need a rich mixture to reduce the in-cylinder temperature? Why can't we instead go for a lean one? My understanding is that the extra fuel that goes into the cylinder absorbs more heat to vaporize but that also means that more energy is now available for combustion which will lead to greater in-cylinder temperatures. Or the other case could be the fuel escaping from the cylinder without burning or partially burnt fuel leaving into the exhaust leading to greater HC and PM. So why would you ever want to inject more fuel to reduce the in-cylinder temperature? Why wouldn't you simple go for a lean charge instead?

[@yanb1981]

imagine engine is already running hot, peak thermal efficiency, once you reduce fuel and go lean temps jump significantly. result= more heat creates detonation, fried rings, damaged piston etc. Lean mix at max operating temp is recipe for disaster. Ask anyone who's blown and engine doing so (I have recently, on a small scale). Rich mixture is crucial to avoid the potential damage caused by heat, and no adding more fuel doesn't worsen the condition bc ratio of the fuel is greater. Simple test, buy a carbed 50cc scooter, install a 70cc bore kit, keep stock jets (no increase in fuel) enjoy for a little while. Then have it blow at WOT. gaurantee it will happen, but no better way then to test it for yourself :) lol

[@surendharank3128]

The reason is there will be unburned oxygen. High temperature oxygen will react with metal causing degradation. So, always, air fuel ratio is slightly fuel rich. This is the case everywhere, like gas turbines, rockets. I don't know why the mixture is more fuel rich than normal at the start.

[@freethinker3435]

nice ,thanks for knowledge sharing.Great.

[@ChildoftheKoRnf9]

Want to talk about rare? Naturally aspirated Manual Transmission (Standard for you out of the US folks).

[@dave_riots]

Those are common in the Midwest.

[@kenevanchik4478]

Gasp! Heretic! Heretic I say!!

[@ChildoftheKoRnf9]

@@dave_riots So few in the west coast. Its ridiculous.

[@antholito]

@@ChildoftheKoRnf9 Well there's your problem

[@Rastadogg85]

Miata's my man.

[@joewwilliams]

Tune in next week for "5 Reasons You Should Buy A Turbocharged Car"?

[@nordic5490]

Joe Williams yup. But... Jason already bashed turbos on another video.

[@WeightyLemur]

Oh God, don't let vehicle virgins take over Jason 😥

[@dwvw]

I have a 2.0 litre four cylinder that has 540 reasons.

[@WeightyLemur]

@@dwvw So is one of the reasons the towing home when running at full boost for more than 15 minutes? Id say so too, more time with the family! 😍

[@dwvw]

@@WeightyLemur 2016 Golf R, has 90,000 km's on it. Year round daily driver in Canada. Makes 540whp and runs 10.82 seconds in the 1/4 mile. Stock turbo did blow, but it's a known issue and I haven't had a problem with the car other than that.

[@stuff8605]

Lots of small 1.6L Hyundai and Kias have the turbo kick in pretty low in RPMs. Great to get you merging onto an interstate.

[@SkylineFinesse]

1,500 to 4,500 rpm. Nice power band. They haul ass for what they are

[@corpuzone]

If I had the money I’d buy that same exact rc-f you’re driving. Beautiful piece of engineering art and reliable by Lexus. I drive a ‘18 Honda Accord 2.0t and I agree with you it’s fast/fun but man hate the lag and doesn’t hold in the high rpms like a naturally aspirated engine does!

[@zipskippy433]

Turbos are great when you're cutting into another lane. You cut someone off but instead of accelerating into space, with the delay you make them hit their brakes, and just as they start getting mad you take off. Combine throttle by wire, turbos, and an automatic transmission hunting for gears, the look on other people's face is priceless.

[@feez357]

Looks like your username was made specifically for this comment.

[@BigUriel]

So the most recent car you've driven was built in 1992 or something?

[@zipskippy433]

Sérgio Alves 2015 Ford Escape (turbo), 2017 Nissan Altima, 2018 Kia Soul. At least the Soul has a sport mode which seems to reduce the delay with kick down when maneuvering in city driving.

[@BigUriel]

@@zipskippy433 They must all have some really shitty automatics because you can't tell me with a straight face that those cars have such bad turbo lag that you nearly crash into people in traffic. Or maybe you just can't drive the cars properly, you don't floor the throttle in 6th gear at 1200rpm on a small turbocharged engine. Do you americans realize that that in Europe like half the cars on the road are turbocharged? An no people don't crash them because of the turbo lag, and yes they do last hundreds of thousands of miles too.

[@alrod9535]

@@zipskippy433 You're exactly the guy I like to have fun in with my Nitrous car :) Good luck with your so called driving style. Sounds to me that you'll be the one getting mad. LOLOLOL

[@guomondur9248]

5:27 wish I known this 10 years ago when I had a 335i (twin scroll). I drove it hard and followed BMW’s annual oil change schedule.

[@brianhind6149]

It is obvious you don't keep your cars very long. Your driving style suggests that. Your points regarding turbos are all correct, & they are best reserved for engines running at a steady speed. I had an opportunity to purchase a turbocharged vehicle recently, & although the price made it a deal, I declined the offer, simply because of the turbo, & the driving techniques it invokes. My Dodge Ram with a Cummins 6BT 12 valve engine & Holset turbo have run 1.5 million miles, & both are just fine. My 78 Ford F150 (351M) has well over one million miles & has had two rebuilds & one transmission rebuild (C6). I enjoy your videos & the fact that you speak knowledgeably,. There are a number of very well informed folk with automotive videos on the net, & a horde whose misinformation can most charitably be described as "unfortunate". Thanks for your technically correct video.

[@phil-good]

I totally agree. Atmo engines are magic. But I must admit that the twin turbo engine are very close to the atmo engines. I have an ordinary car which happens to be a BMW 118d with a diesel twin turbo charged and have had a Z4 strait 6 cyl 3.0 atmo engine .... so I can compare, theses twin turbo has really progressed. I’m also a mechanic engineer and really appreciate your technical vids. Keep the good work 👍🏽👍🏽👍🏽