Hyundai Ioniq 5 - Efficiency & Range Test at Highway Speed, Going Slower Makes A HUGE Difference!

55mph vs 65mph vs 75mph, range efficiency differences are pretty staggering.
I'll be honest in saying I didn't realize how big of a difference in range and efficiency I would see by just going a few mph slower. I've been driving slower than I did in the past with my ICE vehicle daily driver already. But I was still driving around 10 mph above the speed limit pretty often.
What happens when I try driving at the speed limit or up to 5 MPH over the speed limit when on highways? Pretty amazing results that could help you decide whether you'll make a 300 mile trip without having to stop and charge even if it's mostly highway miles.
Thomas from PCs&EVs videos:
55mph range test
• Hyundai Ioniq 5 LIMITE...
75mph range test
• Hyundai Ioniq 5 Limite...
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[@vlad2838]

Very valuable report-thank you! On a recent road trip, I made very similar findings on a stretch of highway with no DC fast chargers. Keeping the speedometer at 65 got me to my destination with even 30 miles to spare. Keep up the great work!

[@CarsJubilee]

You're welcome and thanks Vlad! That's awesome :)

[@kab7044]

Totally agree with your findings! I just had a 200 mile trip yesterday and I had my cruise control set at 65 and it was 95% freeway driving and sometimes in traffic. When I arrived home I had a range of 95 miles left. I’m extremely happy with the car performance. However, hard acceleration is bad, accelerate slowly and you can achieve great results.

[@CarsJubilee]

Ah that's awesome, that's way over epa estimates and still at a very reasonable speed.

[@FrancisdeBriey]

Totally agreeing with you, I also now tend to drive around 90 km/h or 60 miles/h on highway, new Zen way of driving which doesn't cost a lot in time increase. Thank you for giving numbers in both miles and km, this helps all the continental Europeans me included !

[@CarsJubilee]

You're welcome! I agree in most cases we won't get there much slower so it really does make sense to drive slower. Much more relaxing 😎

[@johncarson1427]

thankyou.....great report and a good incentive to slow down a bit

[@CarsJubilee]

You're welcome! And totally agree it really is a great incentive to slow down.

[@oliver90owner]

An enjoyable video and pleasant comments on it.

[@CarsJubilee]

Thanks!

[@user-tx5dm5jy1d]

I have been driving 65 to 70 so from now on I will stay on the right lane and do 55mph. Thanks for your info.

[@rosierapathy]

awesome video! for me I think it's about maintaining momentum while spending the power as efficiently as we can (throttle control), unless we're going downhill I think it's quite impossible to get high speed with few power, so getting slower is definitely the most sensible option :) highways here have low speed limits (59-62 mph) and I usually cruises around 59-60 mph, which translates into 8-8.5 km/kWh (RWD model), just did a 250+ km trip last week with 55% remaining at the end, which was quite awesome 😄

[@CarsJubilee]

Wow that's amazing efficiency on the highway, I guess RWD vs AWD model on the highway still makes a big difference (plus wheel size). Ya maintaining momentum is very important, completely agree!

[@Bl4ckTwT]

Great information. Thanks

[@CarsJubilee]

Glad it was helpful!

[@CRVgarage]

Great info. I'll stick with 60mph on a 70mph road.

[@NorbertNagy00]

Great video Mate. Thanks for sharing your findings with us. One tip I can add that Auto regen on normal / medium setting is the best and using cruise control as often as possible. Mine has 73kwh battery and after 90000 miles long time average is 4.8 UK miles per KWH. Tyres are Michelin Primacy 4 and 2.4 bar pressure in each of them.

[@CarsJubilee]

Thanks! Auto Regen and adaptive cruise are fantastic, will prob help most drivers increase range. Wow that's a ton of driven miles and excellent efficiency!

[@Exarion251]

Regarding the metric conversion, I don't know if any country uses km/kWh. Most will use kWh/100km. Thanks a lot for the video.

[@CarsJubilee]

That's true, you're welcome!

[@drazenpetrek5586]

Excellent video. Speed/range graph would be very clear way to see the dependancy clearly and help people decide about the speed they'll travel.

[@CarsJubilee]

Thanks! That's a good idea, will definitely keep it in mind for next time.

[@TheTom2video]

Thanks for sharing the video. I learned a lot from it. I have a 2023 Hyundai Ioniq 5 Limited AWD since early November. I do make trips from Baltimore to New York often. On the New Jersey Turnpike, the speed limit is 65 mph. Most of the time, cars fly past you even if you're doing over 65 mph. I plan to drive my Ioniq 5 to New York sometime in March when the weather gets warmer. I'm a little hesitant about driving below 65 on the Turnpike. Unfortunately, there are no Electrify America charging stations on the Jersey Turnpike. (mostly Tesla). I would need to go past exit 13 (Goethals Bridge) where I get off to go through Staten Island, then to Brooklyn instead to exit 13a, The Mills Mall in Elizabeth NJ where they have Electrify America Charging stations. In the event that I'm unable to to get to a charger, I could at least make it to my destination with 40 miles to spare. Hopefully, I should be able to drive below 65 mph to increase range without being plowed over !!! What is your advice?

[@CarsJubilee]

Looks like Baltimore to NY is about 200 miles. Even in winter conditions that should be doable on a single charge going 65mph most of the way as long as you stay out of sport mode and out of ipedal on the highway. Personally I've decided to try and stay away from making charging pit stops since usually I've got my wife and kids with me who don't want to deal with the unexpected things that can happen at EA. Instead I look for charging options near my destination (even level 2 charging options through the plug share app). But that's just me as we have had sub par road trip charging experiences with EA. I'd probably stick to going 65mph on the turnpike stretch since you should have enough range to make it in one shot. The range at 65mph is still pretty good. Hope that helps!

[@TheTom2video]

@@CarsJubilee thanks for the advice. I will play this by ear. I would probably do 60 mph most of the way up. At least, this would give me more than enough to reach my destination even without making a charge stop. This would give me about 50 miles of cushion. Where I’m going is about 210 miles. I do have the free 30 minutes of dc charging sessions for 2 years . Unfortunately, where I’m going, there are no Electrify America charging stations in Brooklyn. I would have to go to Queens or Long Island 15-20 miles away. That’s doable. Going to Elizabeth, New Jersey would cost me about almost $40 in tolls. In Brooklyn, most of the changing stations offer Level 2 charging. The charging infrastructure will get better as time goes on. Hopefully real soon!

[@TheTom2video]

Hi Victor: just returned from New York yesterday. The previous trip was disappointing due to the windy and rainy conditions. This time, I got similar results. The weather was hot with temperatures as high as 93 degrees. I had the a/c set at 68 degrees. I recharged in Elizabeth, NJ I was able to charge my ioniq 5 to 91% with 326 miles of range. Kept my speed between 60-65 mph. Used the eco mode with level 1 regen. I covered 206 miles from the charging station to my home in Baltimore. The gauge read 25% and 83 miles of range remaining. When I went to New York , the temps were in the 70's. A difference in temperature affected my range. The kwh was at 4.0 Not much difference from the previous trip. The previous trip was heavy rains and high winds. Weather conditions and speed makes a difference. BTW, any news on your Ioniq 5 and how's the Tesla Model Y doing?

[@CarsJubilee]

Wow very good efficiency again! Very impressive stuff considering what the EPA rating is. Our ioniq 5 is headed back to Hyundai soon, final steps to the buyback. I've got a lot of content filmed that I'll be getting to in the cooking months. Model y has been doing great! I think I've gotten lucky this time around, getting what appears to be better than average build quality and servicing. Updates coming soon!

[@TheTom2video]

@@CarsJubilee thanks for your reply and update. Will be looking forward to see how the Tesla model Y pans out.

[@bharathkanna]

First of all thank you for making very informative videos. Driving Slow is good but at the same time driving slow can be deadly(slow meaning 60 or even 65 on posted 65). Because everybody is trying to move/ pass right or left lanes when I am in 2nd lane from the right in 4 lane road. Also regarding the efficiency I wanted to clarify on 2 things. I saw your videos on regen and autoregen. 1) I still didn’t understand how auto regen works. I thought that auto regen is something that works similar to adaptive cruising but may be not … please correct me. 2) can we use regen all times when you are driving, does it have the wear on the battery that charges leading to the battery damage ? Thank you

[@CarsJubilee]

You're welcome, and I totally agree about the safety aspect. Driving below the speed limit is definitely not a good idea. It's a shame that driving the speed limit can be hazardous, too many crazy drivers out there. Auto Regen is similar to adaptive cruise but not the same. It only does automatic braking, doesn't do full stops and only provides up to level 3 regen. Sounds not so great when I say it like that so maybe I can call it enhanced one pedal driving? In the right conditions you can keep your foot on/off the accelerator without ever having to use the brake pedal because it will slow down for you. I'm going to do a final part 3 that will hopefully give more clarity. It's hard to use and even harder to explain haha. As far as using it all the time, I don't see why not. Regen braking has been around for a long time and I haven't heard of any major issues with it. Teslas are mostly driven in one pedal driving which means they are using regen braking constantly. So far all seems to be okay with their systems?

[@bharathkanna]

@@CarsJubilee hey I know it’s very hard to explain about regen … but the way you edited your videos and all those stats excel doc and all of them is great. With regen any local driving(5 to 8 miles no highway ) I am able go back and forth with zero miles lost ….. I go let’s say starting at 150 mile range and I am come back home with same mile range. Regen option is great .. As you said it’s like a game. I love this car 🚘 .. thank you for everything ..!!

[@CarsJubilee]

Thanks I appreciate that! Haha ya it really is a game!

[@oliver90owner]

@@bharathkanna The last few mph doesn’t need the foot brake much. I use the left paddle to come to a stop, just need a tickle on the accelerator pedal to start rolling again, either accelerating along with the vehicle in front or more sedately if they hare off from the lights/roundabout/etc. Stopping using the paddle is preferable to auto-stopping with the adaptive cruise because one can pull up with more space between yourself and the vehicle in front - it may well save damage at both ends, if bumped from the rear!

[@eberfernandez7968]

does load weight matter? I know its probably a dumb question but how much less range will I get with 4 people in car instead of 2

[@CarsJubilee]

I always thought it would matter at least a little but I've heard it debated. Some say it doesn't really make a difference.

[@michaelcottenden3216]

I'm assuming all of this data is for AWD models. Although based on my driving experience with my RWD model, I'm not sure I see much more efficiency. Oh and Victor, thanks for including the metric system conversions!

[@CarsJubilee]

Ya all of the testing here is done with AWD models, but RWD models should benefit similarly as we are fighting against the same things (aero dynamics/wind resistance) regardless of RWD or AWD. Traffic conditions, weather conditions etc may affect the efficiency numbers so it's really hard to get it perfectly right if we use small sample sizes like mine where it's only a 40 mile (64km) loop. But if you repeat it over and over like I've done over the past few months then eventually you should notice the differences if all other conditions are relatively the same. Figuring out the avg speed may help explain the lack of difference in what you are seeing. I had cruise control set to 58mph on one leg and 60mph on the return leg but the ending avg speed for both legs came out to roughly 57mph. Meaning traffic conditions forced me to drive slower overall than I thought I was going since I thought I was going a pretty steady 60mph the whole time but apparently not. And you're welcome with the conversions, I should have been doing this earlier on =)

[@oliver90owner]

@@CarsJubilee There is a different weight to consider, between the 2WD and AWD. Also the wheel size makes a difference, so that needs to be taken into account if the cars are different. Steady driving makes little difference as both the cars will be in 2WD - one all the time and thecAWD most of the time. I find that 52/53mph on lots of UK single carriageway roads (60mph speed limits apply) means few vehicles actually pass and the vehicles bunch up at the next roundabout or intersection. Dual carriageways are better at a little higher speeds - just enough to prevent lorries gaining. I prefer the steadier speeds, for maximum range, as I don’t generally need to rush anywhere these days.🙂 Costs less, for starters! I watch the difference between the distance-to-destination and the GOM, to decide if I need a ‘splash and dash’ top-up. So far, I’ve not actually needed a top-up during the long legs of the journey.

[@terrencecaldwell7373]

So, I've been driving the speed limit and on auto regen and I am usually getting 2.5mi/kWh. This usually happens mostly when I go short distances. Since my efficiency resets after every charge I start at zero and have to build it up to a respectable efficiency. Do you have that same experience?😂 My other question is do you pay attention to the blue efficiency bar at the bottom of the dash? I try to coast and not press the pedal as much to keep it above 4mi/kWh, but doesn’t seem to be working effectively.

[@CarsJubilee]

Ya I do get lower numbers on very short trips. Very hilly in my area, Drexel hill area is pretty up and down too in some areas. I look at the real time blue bar/gauge occasionally but I usually prefer to have the current drive efficiency numbers showing in the driver's display. If you are around 4mi/kwh then you are doing it right!

[@oliver90owner]

Cold battery? Heavy acceleration? Heavy braking? They all make a difference!

[@bilgyno1]

I just had a run of 423 km using only 81% of the (72.6 kWh EU) battery. Total consumption of 133 Wh/km, or 4.7 mile/kWh. That gives a range of over 520 km, although the WLTP of my configuration is 451 km. Mostly highway at 55-58 MPH, staying mostly in the right lane between the trucks. A bit extreme, but it works...

[@CarsJubilee]

That's amazing efficiency on the highway. I only like driving that speed when I can stay clear of big trucks. They are always kicking up rocks etc so to me on those occasions I'll take the range/efficiency hit and drive a little faster to stay ahead of them haha.

[@bilgyno1]

@@CarsJubilee the taxes in Holland are pretty high, but we do get nice roads... I just let the SCC handle the distance, and even at the shortest setting the car will maintain a sizeable gap. But really, this was just for testing. Like you said: good to know what you can get in what conditions.

[@radiioman46]

When in town, I don't care. Gas is free anyway, right? But when I'm on a road trip, my concern is that can I make it to the next charging station without running out of gas, therefore, I may start out at about 70 mph, and If I see that my GOM is declining to the degree that I might not make it to the charging station, I slow down to 65, and do a rinse and repeat, until I'm comfortable in making the station. I've found by slowing down to 59 or 60 miles an hour, I keep the GOM from creeping. Bottom line is that I don't want the creeping to dissolve my safety left over range. So I agree that slowing down does give you more range. Keep up the good work!

[@CarsJubilee]

Ahh I do similar where I start out around 65-70 on longer highway drives and then start slowing down if I see the mi/kWh dropping really low. You are right electricity is free for us for the next 2 years haha so I should drive faster and enjoy it but it's become a game for me sometimes.

[@radiioman46]

@@CarsJubilee Well, learning how to watch the GOM and mentally calculating if it's creeping or not is sort of a mental game. But it's worth it. I do it even when I'm not worried about the range. I used to do the same thing with my gas suv too. watching the GOM and see if it's accurate, creeping or whatever. Keep up the good work!

[@TheTom2video]

Hi Victor: just arrived here in Brooklyn, New York driving from Baltimore. It’s been cloudy with very light rain. Temperature in the low 50s. I wrote to you awhile back about making this trip. I had my ioniq 5 charged to 100% with 314 miles of range. Drove up on I-95 and the New Jersey turnpike. Stopped at an electrify America charging station to recharge before crossing into New York. Drove about 200 miles and still had 97 miles of range left. 32% battery. I only charged it to 90% which gave me 277 miles of range. Averaged 3.9 kWh . I noticed that driving northbound on the New Jersey Turnpike is mostly upgrade. So when I do head back to Baltimore, the turnpike will be going downgrade which will increase my range. I was averaging 55-65 mph- mostly at 60. EA charging station is no issue at all. Just to touch base with you about my trip up. I’ll comment when make the return back to Baltimore within the next 2 weeks. Thanks for all you help and advice

[@CarsJubilee]

Very nice highway at 3.9, you are definitely doing it right! We made the round trip drive down to DC from Philly about a year ago in our Ioniq 5, probably only managed 3.5 avg for that trip. I was probably going 65-70mph. Our EA stop was not so pleasant at the Abingdon station but glad yours has gone smoothly overall! Let me know how things go on the way back!

[@TheTom2video]

@@CarsJubilee I will definitely let you know how I made out returning to Baltimore. Thanks for your prompt reply. BTW, the only times I’ve hit 65 mph was going on the downgrades on I-95 and the Jersey turnpike. Mostly on I-95 Great job on your recent trip to DC doing & 65 plus

[@TheTom2video]

@@CarsJubilee Hello Victor: Returned from New York this afternoon. The weather has been lousy. Rain and high winds. I drove over to East Brunswick New Jersey by the Walmart and had my Ioniq 5 charged at the EA charging station. (exit 9 off the Jersey Turnpike) I was able to charge it to 93% with 306 miles of range, With the heavy rain and high winds, I wasn't able to maximize my range. Traveled about 200 miles and averaged 3.6 kwh. Temperature was in the mid to upper 60's. When I got past the Delaware Memorial Bridge, the rain stopped and the sun was trying to shine. It was still very windy on I-95 all the way home. When I got home, I had 76 miles of range left or 26% charge remaining. I would've averaged 4.0 kwh if it wasn't for the rain and high winds. At least I made it home safely. It's still windy this evening.

[@CarsJubilee]

That's excellent, well done on the efficiency! Seems like you've got the ioniq 5 all figured out! The rain and wind really do make a big difference, stuff I never really thought of cared about in a gas car.

[@TheTom2video]

@@CarsJubilee thanks for your response. I totally agree with you about the rain and wind when you're driving a gas car. At least you can find a gas station easier and faster than you would on an electric charging station. I will be making future trips from Baltimore to New York between now and the end of the year. This recent trip was a test and I was kind of worried about not finding charging stations. Where I was staying, there were hardly any rapid dc charging stations. In fact, I did drive from Brooklyn to Queens to have my Ioniq 5 dc fast charged. That was 15 miles from where I was staying. Doable, but out of the way. Hopefully, the infrastructure should get better sometime in the short future.

[@bobcaldwell9238]

I don’t think you mentioned which driving mode you were in. Eco?

[@CarsJubilee]

Hey Bob, I drive mostly in normal drive mode in my AWD limited Ioniq 5. I don't notice much difference in Eco mode.

[@bobcaldwell9238]

@@CarsJubilee thanks, Victor. Getting a lot out of your videos. Keep it up! I’m concluding that when driving if I expect to drive fairly slowly and do a lot of braking (stop signs, stop & go traffic, etc.) I will use Eco/iPedal. But once I get out on open roads (suburban, semi-rural, freeways with moderate to light traffic), ie don’t expect to have to brake very much, I’ll switch to Auto and the default regen level. Does that sound like a reasonable strategy? Or a higher level of regen in Auto? Also, what about Smart Recuperation? I’ve watched your videos but still trying to figure it all out. You have the Limited AWD and I have an SEL RWD so we cannot compare apples to apples and some of what you discuss in your videos may not apply to my situation.

[@gringojohn2]

Is 55 MPH the optimum rate of speed for best range?

[@CarsJubilee]

That's a great question which I don't know the answer to haha. I would imagine even slower would be even better for range and efficiency but I'm not sure. If I ever hit a stretch of road where I can do a steady 45mph loop I'll be sure to report back.

[@michaelcottenden3216]

I have done some driving on a 50 mph / 80 kmh road and seen 7.5 km/kwh on the display. That's not a perfect test loop but it should give you some idea that slower than 55 mph should yield higher numbers.

[@triplextriplexxx8225]

what is the reason nobody is doint tests with speeds 40 miles per hour or like 70km per hour, some of us dont live around highways and we drive between 60 and 80 km per hour ?

[@CarsJubilee]

I think range tests are primarily focused on road tripping where I'd imagine the majority happens at higher speeds. Also might be hard to find a really long stretch of non highway roads to do a few hundred miles worth of range testing. But for what it's worth I do all city driving and in the summer I see 350 miles of range from my AWD Limited. I would expect to see around 330-340 if I'm doing a steady 40mph on flat roads.

[@triplextriplexxx8225]

@@CarsJubilee some of us live in a country side whre is no highways . so please record video for that type of people like me .

[@CarsJubilee]

Sure the next time I get the chance I'll give it a try, the hard part is finding a road like that in my area.

[@triplextriplexxx8225]

@@CarsJubilee thanks

[@oliver90owner]

@@triplextriplexxx8225 You only need to look at the official data figures, to understand that slower means more range? It would be harsh acceleration and braking that would compromise such driving conditions.

[@bilgyno1]

Speed is an essential component of efficiency, as it determines the drag. At speeds above 50 mph, drag is the most dominant friction (more important than rolling resistance which is influenced by weight). The Cd of 0.288 of the Ioniq 5 is its Achilles' Heel IMO, as it means the care loses rage quickly at higher speeds. Much more so than eg the Model Y with a Cd of 0.23. Doesn't sound like much, but it's actually almost 20% less drag and makes a big difference in speed. It actually negates the charging advantage of the Ioniq 5 on a road trip.

[@CarsJubilee]

Ahh that's true about the drag coefficient. I'd definitely be seeing 400 miles of predicted range if the ioniq5 had a Cd like the model Y haha.

[@EnmandsBand1]

good tests, thank you BTW my ioniq EV does just about 50% better than all your efficiency numbers, I'm doing 9-10 km/kWh in the summer. I still want the Ioniq 5 though, mainly because I really need to be able to tow a trailer.

[@CarsJubilee]

Wow that's impressive efficiency. The original ioniq has a pretty small motor setup, much less power. Not a bad ev from what I've heard but like you said I can't imagine it's able to tow anything. I've actually never driven it, hope to try it one day! Ioniq 5 has quite a bit more power, especially in awd form. But still manages pretty good efficiency all things considered.

[@oliver90owner]

@@CarsJubilee I believe the ICE versions have a towing capacity rating, but the BEV versions were never type-tested - but some have added a tow-bar. While the 5 will lose a fair amount of range while towing (I expect), it will be far better than the little Ioniq because of the fewer stops for charging.

[@BioniqBob]

Ditto. 2017 IONIQ here and looking to get the 2025 IONIQ AWD (live in the north). Love my Wind Knife.

[@EnmandsBand1]

@@CarsJubilee I just changed from the Ioniq to a Kia Niro EV, that is a proper EV with towing capacity and roof rack options too. I really think it is a well made, good quality car with low noise levels and a very welldesigned total user interface with very few issues. Bigger and more practical too. It does lack the efficiency of the Ioniq though.

[@axion8788]

Wind resistance increases logarithmically with an increase in speed.

[@CarsJubilee]

Makes sense!

[@oliver90owner]

Is it logarithmic or exponential?