Is the B58 A Reliable Engine?...Honest Thoughts from an Owner

More on the B58 PCV Issue: • This 340i Problem Got ...
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[@kern417]

More on the B58 PCV Issue: kzbin.info/www/bejne/kJeae4xsqpWshtk

[@kevin-jm3qb]

Its reliable enough for toyota, and it's easy to fix because of you. The community owes you big time.

[@willm2624]

That’s the truth

[@JanRosario1]

fr!!

[@marklinley815]

Not much more to say!!!

[@monocuco818]

I looked up on consumer reports and found the 2016-18 340i is all green for reliability. That surprised me actually. Very few cars are all green on consumer reports.

[@bsdpowa]

don't early ones have injector issues which were fixed in 2018/19?

[@Great_America]

The B58 is literally the most reliable high performance engine on the market. One could argue the S58 is right up there. Either way, BMW engineers have really outdone themselves 👍🏻

[@gendaminoru3195]

good perspective!

[@suprola7961]

Thanks to my Supra, I am now in the market for an X5 and the biggest reason is the B58. That might have been BMW’s plan when they collaborated with Toyota, it worked for me 🤣

[@robbyskyline]

I literally did just that. X5 hybrid though, unless you want the v8 with top mount turbos. Trust me hybrid is worth it. 50 miles all electric mode and have the b58 on in milliseconds with the tap of a button. One day I hope to swap the x5 b58 TU3 upgraded parts out with my supras older b58 iteration parts.

[@Mike-cz2yw]

If you’re a driving enthusiast go x3 m40i. Test drive both before deciding. I know I did and glad I did

[@lamakicker69]

@@robbyskylinex5 50e? That car is really interesting to me, I have a 440i running stage 2+ that I will hold onto for a couple more years but then I’d really consider getting that hybrid B58 x5 50e. In theory with the JB4 piggyback tune it could be making almost 700hp at the wheel with zero supporting mods lol not sure how that would affect the hybrid system though so I’ll let other people experiment with it first before I pick one up hahaha

[@robbyskyline]

@@lamakicker69 yes the x5 50 e. It's crazy to think that the jb4 tune would bring it up to 550 hp or torque and the electric motor adds another 100 hp and 150 torque....so that 700 number is very much in reach. But it's a very complex drivetrain especially transmission with the electronic components intertwined....

[@lamakicker69]

@@robbyskyline the electric motor is actually about 200hp, the gen 3 B58 in the x5 50e is detuned so it only makes about 300hp but obviously it’s capable of making just as much power with a tune as the regular gen 3 B58 that is rated at 375hp makes which is 500whp(plus the 200hp from the electric to get 700) with the JB4. Seems like the perfect daily car with a ton of tuning potential! The 40 miles of electric range is great too. Awesome car man, enjoy it!

[@scringe1]

I'm at 38k miles in my 2020 440i. Service intervals of spark plugs, oil, filters and coolant change is all I did so far. Car runs like a champ. I believe these engines will be sought after in the used market years from now. Great video Kern.

[@scringe1]

Agreed. I'm at 39k on my 2020 440i. Car is nails. Filters, tires and oil changes so far. Best car I ever owned for fun factor inside and out.

[@saulmanzo3993]

Do u drive it like u stole it daily? Or regular

[@scringe1]

@saulmanzo3993 I drive like I stole it. Just did the transfer case fluid, rear brakes and rotors. Ditching the run flats helped too. The 440 is a good all around daily that doesn't beat you up over bumps and potholes.

[@thomasm5263]

How can you come to that conclusion after putting hardly any miles😂 some people will do that mileage in a year

[@SparklingWalrus]

39k miles is fucking nothing retard

[@clam741]

This is probably the best channel on the subject in my opinion . Very knowledgeable , clear and straight to the point . Much appreciated .

[@mattap1998]

155k on my 2016 340i 💪😎

[@Unknown_g20]

Any major repairs ?

[@dgdave2673]

Thanks but mention any major issues, just regular maintenance etc… not relevant otherwise

[@n3rdstrength]

I really like your demeanor and how you present your knowledge, giving me peace of mind about my new to me 2022 m240i. Subbed and look forward to watching more videos.

[@xDAAAZEx]

There’s a 170k mile 440i currently for sale in the UK

[@rayland9305]

There's 300k N55's in the FB group.

[@aadetale]

@@rayland9305 I don’t believe it haha. N55’s??

[@rayland9305]

@@aadetale There's literally an endless amount of ppl on the FB group with 200k miles and over. Pretty crazy.

[@rayland9305]

@@aadetale Two with 300k+ miles that I know of but won't let me link it.

[@ganuv]

If Toyota decided to put the b58 in their cars its reliable enough

[@milanmarca]

Best engine yet. Pushing 145k.

[@praisevx9243]

Have u replaced the injectors yet?

[@milanmarca]

Not yet. Had a PCV issue that lead to the valve cover and rear main being replaced around 135k (BMW reimbursed me for it). Other than that, I’ve replaced almost every hose on the cooling system, including the water pump. I may change the aux pump, electric water pump and primary coolant reservoir as some point.

[@HaiRune]

@@milanmarcaHaving to replace all that doesn’t seem too reliable to me

[@milanmarca]

@@HaiRune Sure, I see how you could say that. PCV issue was reimbursed by BMW (known issue). Cooling system - was a bit of a pain in the butt but after those two issues everything has been solid. Love this car.

[@HaiRune]

@@milanmarca Damn and that was all stock too? I don’t wanna sound like I’m being a hater I’ve just been looking into getting an m340i so I’ve been trying to see how reliable the b58 is or if it’s gonna be at the dealer. Heard the new updated b58 engine might be more efficient but idk if it has the same problems

[@johnkim821]

First BMW for me and at 42k miles I have experienced a water pump leak and broken threads on the large plastic radiator cap . Not sure where those pieces are.. sigh.... Going to change out all the plastic parts now before anything else breaks. Not an issue since I do my own work but the plastic parts problem is not reassuring.

[@glacierb58]

give that shiny steering wheel some good leather cleaner!! Keep up with the good videos.

[@jeffsloane8628]

As a previous owner of 3 I-6 BMWs (both M and N series engines) all with over 120k miles, has BMW changed the material they make their gaskets from? Other than the plastic coolant lines that you did mention, my number one complaint about BMWs was the material selection of the sealing gaskets in the engines. After 80k miles or 6 years, the gasket material becomes very brittle, like glass. Once this starts you will have oil leaks and be replacing these gaskets (oil stand, valve cover, oil pan, rear main seal etc.) on a regular basis for the life of your vehicle. For comparison I also own a 1998 Corvette. It's now 26 years old with more mileage than an of my BMWs, and has never had a leak. My wife owned a 2008 Yukon XL with >230k miles and no oil leaks. For the price of BMWs and their level of engineering they should have better material selection. I really hope they have resolved this for Toyota's sake because if Supra owners start showing up with oil leaks in the next two years, it's not going to be good for their reputation either.

[@oleksandr8371]

Agreed. "For the price of BMWs and their level of engineering they should have better material selection.". Unfortunately, they do it on purpose. BMW is no longer in business of providing engineering that lasts, rather engineering that lasts until warranty expires. It's a pretty sad design philosophy they've adopted. Great cars, great performance, but terrible reliability, all by choice, greed prevails.

[@freakkay1]

Legend mate! Thanks for all your videos. You definitely give the b58 community peace of mind

[@randyp305]

Hey Kev once again thanks for the info , you mentioned reading logs … do you have a video or could you do one on how to do so ?

[@softwere]

I like keeping it relatively stock and it’s the best daily driver

[@mafiosomax]

These cars are the modern 328i, bulletproof for years to come

[@gendaminoru3195]

Saw your shinny steering wheel bro. All I can say is; geist steering wheel restoration kit. HTH

[@NotGunzo]

PCV, tank vent valve/NVLD, cylinder head coolant hose to expansion tank, and in some situations oil filter housing leaking. Not too bad overall, a pretty great platform

[@F5alconsHouse]

Reliability is sort of odds of failure, you could have the most reliable model and still have failures or the least and never have an issue.

[@whymeagain6965]

If I remember like bmw and Toyota worked together on the engine to make it wht it is now so for the simple fact Toyota was apart of the recreation tells you it had no choice but to be reliable 😂

[@jasonshort43]

The newest turbo v6 from Toyota is proof this is not necessarily true.

[@skatenbikee707]

Helpful video thinking about getting a early 340 with between 70 to 100k as its all i can afford currently own a e90 335d tuned and deleted with over 200k and that thing is pretty dam fast and never had a issue pushing 350 horse and 580 tq just dont want to be dissapointed with the power and reliability of the b58 thanks for the info

[@iAlwaysSpeakTheTruth]

The cooling system on this engine is junk

[@thelastsignature]

My Supra’s engine recently started knocking :( it’s been at Toyota since Sunday. Any chance I could send you a clip on IG or FB and see what you think

[@MGTEKNS]

I had coolant evaporation once as well. It was the cap. That and BMW replaced my catalytic converter.

[@patricksantana3337]

I have a 2016 535 with the B58. Normally, I wouldn't keep a car this long, but no way I'm letting go of it. Best engine I've ever had. I have had more powerful engines (LS6-454), but none this smooth and reliable. I bought a 2024 Mazda CX90 to see how their inline turbo 6 compared. It too is very smooth, but too early to tell if it will be as reliable. I agree with another poster here who says the B58 may end up being one of the most sought after used motors.

[@M240Waheed]

Hey Kern so my cars under warranty so this wasn’t too bad for me but I’m at 29k miles and the car just came back from the dealership after 2 weeks for a “partial vanos” rebuild, not sure what happened and how but thought Id just share my experience! Other than that the car has been flawless and hasn’t let me down. Thanks for the video man

[@phatmeow7764]

pity diesels are demonized in Murica cos the B57 diesel is a much-respected engine in Europe/Asia!

[@untitleditem2334]

jesus, I hope you in the last 6 months you cleaned up that plastic looking steering wheel. I haven't seen a wheel looking that bad in a while.

[@jadadpe3873]

Other than the B58 how is the reliability of the rest of the car? Was thinking about a used 2021+ 540i with around 40k miles or so

[@TeddyBearPL]

Thanks for sharing. B58 owner myself (M340i G20 LCI). Just one thing that bothered me through all the video.. Dude, please do something about that steering wheel. It's not meant to look like you rubbed baby oil into it. Leather is meant to be matte. Try to deep clean it or if that fails - restitch it.

[@kern417]

Sorry that bothers you. This is a car i bought from a junkyard and fixed. Mechanical performance is more important than looks, so you'll just have to be patient.

[@wingedhussar5528]

His focus is performance not detailing. Although 10min with a leather brush and some leather cleaner will fix that right up.

[@gendaminoru3195]

How many miles or months are we getting out of the PCV valves? MTBF?

[@SharamanONorgannon]

My car had a poorly cast head and it cracked once one of my injectors started failing. Not sure how common yet but that cost a bit

[@kern417]

sheesh, that's bad. are you sure it wasn't the cam ledge? or was it somewhere on the head?

[@usuomi]

i really thought you would’ve broke at least 50k by now for what you’ve done for the community. i see your write ups all the time on forums and think what you’re doing is super cool. any chance we could get your thoughts on all available top mount kits?

[@kern417]

yeah i owe you guys an updated turbo video. i'll try to get it in the next few weeks

[@alexiscamacho4168]

im at 140k miles with my 340i gen 1. I got it with 120k already pretty high miles. When i first got it just did normal spark plugs, change oil and trans fluid. Now im catless dp, intake, and tu pump on MHD stage 2 and XHP stage 3 and the only two times the car has let me down is leaking coolant from oil filter housing (its plastic and prone to break idk if gen 2 b58 has issue or will have over time) and fuel pump module (epkm) burned most likely cuz of anti lag switched turned on on MHD. For the epkm i got a 3d printed case with notca computer fan that plugs in to rear fuse box with heat sinks on chips so hopefully that prevents it from burning again. I've done all the work myself due to the many resources online including you kern417! ty (:

[@basharalajjo3343]

I’m looking at buying one with the same miles 120k. How much did you get it for and is it clean title?

[@alexiscamacho4168]

@@basharalajjo3343 I got mine for 21k yes clean title

[@jvfishingss]

so your stage 2+ not stage 2, have you done your injectors? do you push the car?

[@AveGuy1]

Any issues after the transmission oil changed? That's a lot of miles to be changing the fluid.

[@jvfishingss]

@@AveGuy1 not high at all

[@franco166]

2017 340i with the B58. Just passed 60,000 miles. Zero issues. Regular servicing(ie, spark plugs and oil changes). Change oil every 4,000 miles.

[@drepark2294]

23 m440 here. 5500 miles. Subbing

[@kern417]

thanks for the support

[@MrM440i]

Not related question to this video but I can’t find much info on this I just installed a catless vrsf downpipe Both of my resonators are deleted Have a AWE cat back exhaust setup 17 440i coupe Due to going catless, there is a strong gasoline odor, I don’t see any leaks and smell only noticeable when windows down at stop lights or idling

[@kern417]

That's what comes with having a catless downpipe. Get a catted pipe if you don't want any smells

[@MrM440i]

I’m thinking about adding aftermarket Cats like flow master 2000130 in mid pipes, idk if the exhaust will be hot enough there for the cats to work and also 200 cell only so hoping it reduces smell and keeps most of sound

[@kern417]

you need to replace the downpipe with a high flow catted one

[@mgvolts1140]

No they aren’t reliable cause bmw cost a lot of money for repairs in general

[@hg1496]

Chemical guys leather cleaner takes away that shine on the steering wheel. It'll look matte and fresh like new-it happens when you ur hand oils get absorbed by the leather

[@Jdnicks00]

Like you review. What about 48V mild hybrid system?

[@ernestomartinez7710]

I have an Ineos Grenadiere on order that has the B58 but doesn’t offer any shop repair manuals does anyone know how I can buy them?

[@bmwsincekid]

Im at 142 tkm Tuned since 110tkm 30k Tuned So far solid!!

[@raldyjimenez3319]

I have a 2019 F36 440i xDrive 70K mileage and I asked my dealership if I should flush my transmission oil and replace filter and i was told no need as this is not required...whats your thoughts?

[@leakboost]

Boi if u don’t do it

[@maro_m240i]

Thats the official response from BMW "all our ZF8 gearboxes are free maintenance lifetime" well, thats not true. ZF mnufacturer recomends you to replace oil of the gearbx around 80k to 100k km.

[@rayaany.4069]

Don’t flush. Just drain and refill. You’re at the right mileage to do it.

[@ChristopherSantos-wn4sg]

Don't listen to the dealership, I literally dropped off my 2018 340i at the shop today for a transmission and differential fluid change and coolant flush. ZF who is the actual company that makes the transmission says to change the fluid between 60k-80k. Look up FCP Euro ZF8 trans service kit.

[@uberman6023]

At 100k the dealership quoted me $2,000 to change the transmission fluid. Yes, TWO THOUSAND DOLLARS.

[@rayaany.4069]

Hi kern, I appreciate your thoughts. I’m at 45k miles on my 2019 540i and am coming onto my first set of real maintenance items (coil packs, injectors, etc). It’s a real joy to have and I hope to maintain it for many more years to come.

[@birk4951]

How much are the oem injectors?

[@bars1512]

You don’t need coil packs or injectors at that low mileage. Maybe at 100k.

[@B58-Premo]

Breathe a little, injectors not needed. Especially if stock..

[@cuttingedgecool7235]

Great discussion.

[@euheyshdgsbdjstz521]

I got this engine on my x5 80k miles no problems at all

[@Shivnandak]

I have an Ineos Grenadier and it has B58 that's tuned for torque.

[@gerald3389]

So you think a 2020 x4 m40i around 50k used is a good buy? I got a 2011 328i with 125k and I’m ready to get rid of it

[@kern417]

sure

[@the3-4-0]

i was thinking of picking up a higher mileage car, 100k miles at 18k great service record am i crazy if get it ?

[@kern417]

18k sounds like a great deal to me. i'm assuming it's base so not msport etc?

[@Unknownbeast703]

Bro please need help and advice on my check engine light: Went to AutoZone and got to find out that CANISTER PURGE VALVE needs to fixed. P0446 & P0440 codes. What should i replace here? I am on stage 2 mhd intake, cateless DP, charge pipe

[@kern417]

Scan with mhd to get the bmw code

[@marvinzhang3734]

My 2018 B58 just leaked😂

[@JonR35]

What tires do you find hook best in below 40f degrees

[@kern417]

Michelin AS3

[@brice340i]

thanks for this

[@kern417]

you're welcome. thanks for watching.

[@NS416]

I am at a 150,000km and only issued I've had was with P0420 (Cats failed) and a slight leak from the valve cover, it started sweating. I ended up going catless and had my valve cover replace. It's been really reliable. If you're coming from a N54/N55/N20 you'll really appericate this car.

[@rayaany.4069]

I came from an N20 and to be honest it was good to me. Infact, b58 is so far ‘less’ reliable due to phantom coolant loss

[@pppeter8749]

@@rayaany.4069check bottom of pump

[@demondmiller9862]

I also had a N20 2014 528 no problems between 70,000 miles when I bought it used to 130,000 miles only problem with that car water or condensation buildup in the headlights. Now I own 2022 M440 I bought it brand new,I’m currently at 25,000 miles, I do my oil changes between 5000 to 6000 miles no problems forgot to add muffler delete sounds amazing

[@NS416]

@@rayaany.4069 I’ve worked at a Indy shop and N20’s, especially the 2012-2014 were terrible. Mine was a 2014 but I only had a handful of issues (Waterpump and Thermostat failure & timing Chain guides were done) 2015-2016 were good. I wouldn’t call it phantom, there’s for sure a small leak somewhere. If you cannot find one, you’ll need to replace the cap and see if it drops. Kern has a good video on it, he goes over a handful of causes it could be. I would definitely get it checked out, as the leak may slowly get bigger over time.

[@rayaany.4069]

@@NS416 thanks for the response. im going to do a coolant flush in the next few weeks so I will definitely try to find the leak then!

[@skate69641]

It is so damn hard to find a manual 440i xDrive nowadays

[@Sasel12]

It was never easy 😂

[@EMKAPRJ]

Hello Kern, i just bought 22’ 840i Xdrive 20k miles b58C if im not wrong,2 port one Since its heavy, what would you recommend me? Il do bench unlock and bm3 stage 2 with 200cell downpipe, i was told il get around 500hp at the crank. Is it possible i use ethanol mix on the weekends, and gain 570-600 hp on the crank? Since we dont have it on gas stations, i would buy it online, e85. And i guess i need a map for ethanol? I would buy pureturbo 800 straight away but im affraid i wont like big turbo gap it has.. is it really dead at low rpm compared to stock turbo? Thanks…😊

[@kern417]

just depends on your goals. stage 2 works very well and even better with ethanol. you can also get a meth injection kit and that will work well with a pure800. the turbo lag is not that bad.

[@EMKAPRJ]

@@kern417well, i dont have goals as “times” goals.. dont care 1/4 mile etc, since its not a car for that.. i just want it to be powerfull enough for its weight, i guess thats around 550-580hp minimum to consider it fast

[@kern417]

Then yes a pure800 should be able to get you to 550 with a custom tune

[@notavailable6472]

Watching this after I just received a check engine light this morning 😅

[@kern417]

Thankfully it should be cheap and/or easy to fix

[@demondmiller9862]

🫡

[@mitch8920]

Correct me if I’m wrong, but I thought when the car runs the oil runs through the engine better keeping it from overheating?

[@mitch8920]

By “car run” I mean drive

[@kern417]

@@mitch8920 I'm not sure what you're asking

[@vollcare4076]

Do you really have 10.000 miles oil change interval for the B58 in the US ?

[@kern417]

yep

[@vollcare4076]

@@kern417 wow. In Europe ist 30.000km which is like 18.600 miles (CBS) Why do US have shorter intervals ?

[@kern417]

@@vollcare4076 not sure but I've heard that before. But i thought it was closer to 15-20k

[@vollcare4076]

@@kern417 usually CBS asks for oil change at around 27-32k Km in Europe (B58), that’s 18000-19000 miles ca

[@yakboss1482]

Europe has better gasoline

[@hunterdavis4753]

One issue for any engine idling for extended periods of time is cylinder wall glazing/washing. This is part of why semi-trucks and modern diesels have a feature to raise rpms during extended idle periods. You will find this info easiest in Caterpillar documents. Adept Ape on youtube has a good video on this as well thats worth a watch explaining it on diesel engines but the issues can be seen on gas engines as well

[@peterkukolik8402]

Thank you, sir.

[@digitallantern593]

your steering wheel is pretty shiny ..

[@kern417]

Thank you

[@AveGuy1]

4:56 Being at idle means you're putting wear on your engine, but the car is not moving forward. You are wasting engine life. You are wrong. Idle is bad for the engine.

[@kern417]

What lmao

[@ArthaxtaDaVince777]

So a motor will live longer under stress than no stress. My diesel generator would like to have a word with you.