At 65 mph, 3.7 mi/kWh sounds just about right depending on wheel size. My Ioniq 5 RWD with 19" wheels gets around 3.5-3.6 at that speed. At 80 mph, it's more like 2.5 miles/kWh. In regular driving around home, I average 4.1.

You didn't say what trim and what wheel size, and wheel size makes a colossal difference. AWD vs RWD also has an effect.

 

Am curious if anyone is getting better than an average of 3.8 miles/KWhr? Have had this Ioniq 6 since Jan 2024, and just took it on our first road trip SF area to LA area. Best I could get, at 65mph set on the SCC with minimal AC, was averaging 3.7. The GOM meter implies something over 4 is not only possible, but ordinary!
(Incidentally, used the Tesla adapter, and it worked perfectly!)

Right: should have said Ltd trim, wheel size 19". I have some trouble understanding why wheel size should play a role. ?

 

RWD.

 

Am curious if anyone is getting better than an average of 3.8 miles/KWhr? Have had this Ioniq 6 since Jan 2024, and just took it on our first road trip SF area to LA area. Best I could get, at 65mph set on the SCC with minimal AC, was averaging 3.7. The GOM meter implies something over 4 is not only possible, but ordinary!
(Incidentally, used the Tesla adapter, and it worked perfectly!)

Right: should have said Ltd trim, wheel size 19". I have some trouble understanding why wheel size should play a role. ?

RWD.

Are you sure you have 19" wheels? The 2025 Ioniq 6 SEL and Limited have 20" wheels.

3.7 miles / kWh seems about right.

Physics. There are a few discussions about that impact. One member reports that his Ioniq 5 with 19" wheels gets better efficiency than his Ioniq 6 with 20" wheels, which I find amazing.

That's me.

Yup our 2023 Ioniq 5 SEL AWD with 19" wheels gets 4.1 miles / kWh while our lighter (one less motor), more aerodynamic 2025 Ioniq 6 SEL RWD with 20" wheels 2025 gets 3.8 miles / kWh.

It has been very consistent over many months now with both driven on same roads and in same climate,

 

Are you sure you have 19" wheels? The 2025 Ioniq 6 SEL and Limited have 20" wheels.

3.7 miles / kWh seems about right.

View attachment 61682




That's me.

Yup our 2023 Ioniq 5 SEL AWD with 19" wheels gets 4.1 miles / kWh while our lighter (one less motor), more aerodynamic 2025 Ioniq 6 SEL RWD with 20" wheels 2025 gets 3.8 miles / kWh.

It has been very consistent over many months now with both driven on same roads and in same climate,

You are right, 20". The discussion of wheel size is intriguing. Coming from 14" and 15", I find these new, "giant" (by comparison) wheels to be really odd. One explanation I have heard is better ride, but the explanation for why this might be so has eluded me. Agree, added mass difference 19" to 20" is probably insignificant. If anyone has comments on why mnfrs have gone to these giant sizes, would love to hear them.

 

Datapoints: 2025 Ioniq6 Limited RWD, 20” wheels. 100mile trip yesterday, primarily Interstate travel in Western North Carolina. Door-to-door consumption for trip was 3.8mi/kWh. Same trip, roughly same weather (sunny, low wind, daytime, dry roads) in our 2025 Ioniq5 Limited RWD 19” wheels = 4.0mi/kWh. All travel at speed limits, mostly 70mph, some 65mph.

 

Really interesting, seems to 'blow the wheels off' the notion the larger diameter equals better mileage. Still looking for the rationale mnfrs use for going to 20 from 19 (or, for that matter, from 14/15 to 19/20!)

 

re: Wheel size and m/kWh - aerodynamics and friction.

I have I6 AWD, 20" - since I live in a hilly area, so zero regen, sport mode most of the time. On freeways average speed is probably 40 mph but I shoot for 80 (life in SoCal). I'm averaging 3.3, I think. I'm fine with that.

 

Really interesting, seems to 'blow the wheels off' the notion the larger diameter equals better mileage. Still looking for the rationale mnfrs use for going to 20 from 19 (or, for that matter, from 14/15 to 19/20!)

The conjecture, supported by Hyundai range estimates and user's experiences is the larger wheels have lower efficiency (miles / kWh) and therefore range.

How interesting. I would think higher rolling resistance would mean LOWER mileage. Why they would make that trade is mysterious, unless the previous resistance was dangerously low...

Yes higher rolling resistance will lead to lower efficiency and range.

 

20-inch tires are less fuel-efficient than 18-inch tires because they are heavier, increasing rolling resistance, and have less sidewall, leading to increased tire deformation and energy loss. Larger tires require more power to start and maintain their rotation, which consumes more fuel. Additionally, the reduced sidewall on 20-inch wheels provides less cushioning for road imperfections, which can contribute to poorer ride quality and increased energy loss from tire deformation.

 

Perhaps one of these might help: ev wheel size efficiency - Google Search

Another comparison (from the EPA) to go with Hyundai's estimates: Gas Mileage of 2024 Hyundai Ioniq 6

 

Perhaps one of these might help: ev wheel size efficiency - Google Search

Another comparison (from the EPA) to go with Hyundai's estimates: Gas Mileage of 2024 Hyundai Ioniq 6

Outstanding. Thanks. Seems to prove smaller wheel is better for range/efficiency. Am still disturbed by their embarrassing error about wider tire having more contact with the road. The amount of contact is determined by what is necessary to keep the car off the rim, namely, for each wheel, the weight of the car divided by 4 must equal the area in contact x the air pressure inside the tire.

 

According to the head of the design team for the Ioniq 6, they chose 20" wheels because they look cooler.

Great interview on Top Gear if you haven't seen it.

 

Thanks much, had not seen it. Yes, almost everything now is pointing in the direction that these 'giant' wheels were placed there for aesthetic purposes, and nothing else. Interesting, tho, that while he talks a great deal about the 0.21 drag coefficient, he doesn't mention the LOSS of efficiency due to these large wheels - a compromise they made for looks/sales.

 

Am curious if anyone is getting better than an average of 3.8 miles/KWhr? Have had this Ioniq 6 since Jan 2024, and just took it on our first road trip SF area to LA area. Best I could get, at 65mph set on the SCC with minimal AC, was averaging 3.7. The GOM meter implies something over 4 is not only possible, but ordinary!
(Incidentally, used the Tesla adapter, and it worked perfectly!)

On a nice summer day at 65MPH, our best was 4.1 M/KwH. RWD with 19" aftermarket wheels. Usually just under 4. Wind direction can make a big difference

 

thanks! Am suspecting your wheel size, 19 instead of our 20, made the difference.

 

I regularly get between 4-5 M/KwH, but I live in a relatively small town and I rarely drive at over 45 mph. Above that, aerodynamic drag really takes over as the biggest efficiency factor, increasing with the square of velocity. So for any road trip where I am driving at highway speeds, my economy ranges from 3.5 - 4.0 M/KwH. Or less if I'm really booking it or if I have a headwind. And yes, at highway speeds it is the wider tires on your 20" wheels which are giving you an efficiency hit. (also, I spent the first 5 years of my professional career as an Aerodynamics Engineer working at GM's Wind Tunnel in Warren, MI)

 

Am curious if anyone is getting better than an average of 3.8 miles/KWhr? Have had this Ioniq 6 since Jan 2024, and just took it on our first road trip SF area to LA area. Best I could get, at 65mph set on the SCC with minimal AC, was averaging 3.7. The GOM meter implies something over 4 is not only possible, but ordinary!
(Incidentally, used the Tesla adapter, and it worked perfectly!)

My 2024 I6 SEL AWD in ECO mode gets about 4 at that speed in moderate temperatures. I found that tire pressure is critical and temperature of course is a huge factor.

Am curious if anyone is getting better than an average of 3.8 miles/KWhr? Have had this Ioniq 6 since Jan 2024, and just took it on our first road trip SF area to LA area. Best I could get, at 65mph set on the SCC with minimal AC, was averaging 3.7. The GOM meter implies something over 4 is not only possible, but ordinary!
(Incidentally, used the Tesla adapter, and it worked perfectly!)

 

I was confused by this as well. It turns out the 2025 Limited has 20” wheels for the AWD version, but 19” wheels for the RWD. As to efficiency, my understanding is that the tire diameter is the same (the sidewalks are bigger with the 19”.), and the tire is wider in the 20”. Apparently this gives the AWD a sportier feel, better handling on corners and greater rolling resistance. I guess the folks at Hyundai felt that the AWD was appealing to a more performance oriented buyer, and the RWD buyer was more interested in range and efficiency.

 

3 weeks ago I bought a 2025 long range IONIQ 6 SE RWD and drove from Ocala to Gainesville FL averaging 4.4 miles per kWH. I have never reset this and over the total 440 miles driven since purchase, I am averaging 4.9 miles per kWH. I have the engine braking set near the maximum for recharging the battery when de-accelerating. I drove a Polestar 2 in Italy last year and the engine braking was just like my current setting.

 

Pretty amazing, you are exceeding almost everyone else in this thread. From Google maps, that stretch, from Ocala to Gainsville, it pretty short, under 40 miles. What was your average speed? Any tailwind? Do you have 20" wheels? Maybe your engine braking is the key - i personally can't stand anything over about 1.0.

 

Am curious if anyone is getting better than an average of 3.8 miles/KWhr? Have had this Ioniq 6 since Jan 2024, and just took it on our first road trip SF area to LA area. Best I could get, at 65mph set on the SCC with minimal AC, was averaging 3.7. The GOM meter implies something over 4 is not only possible, but ordinary!
(Incidentally, used the Tesla adapter, and it worked perfectly!)

I have the 2024 AWD and I consistently get 7.2Km/KWhr (4.5miles/KWhr) with most of my driving around town. That works out to about 550Km or 350 miles range 100% to 0%. Pretty happy with that. I usually charge at home (24A) to 90% and run it down to about 20% before recharging. It does drop maybe 20% or so during the winter season - Nov. to Feb.

 

We get over 5 in city driving but 4.2 at higher speeds (65+). What drive mode are you in?

 

Good question. We are usually in 'normal', and believe that was the case for this road trip (but, frankly, am unsure!).

 

It is helpful to hear your experiences. I've been considering a 5 or 6, but am leaning now toward staying with our '19 Bolt, where we've averaged 5.2 miles/kWh over the past 1500 miles. I know they are very different vehicles, but I'm just not ready to give up this efficiency.

 

I have the 2024 Ionic SE AWD with the 18" wheels. I have 4800 miles in a year and have never reset the master odometer and it shows I have 3.6 m/kwh - that's probably about 60 Hwy/40 city mix. On straight highway trips (I have a 100 mile run to the airport averaging 70-80 mph) I have seen a low of 3.3 m/kwh (summer 110 degrees, 10 mph headwind) to 3.9 m/kwh in moderate temperatures (60-80 with no head or tail wind). Around town driving in ECO mode (locks out the front wheels after 15 mph) I easily get 5.0m/kwh. The car's ride with the 18" wheels is smooth around town and solid as rock on the Highway. The cabin is near silent (no road or tire noise with the OEM Hankook Ventus S2 AS 225/55R18 tires). After the lease is up (highly unlikely I will buy the car after 33 months with a $29K residual) I will be looking for a used 2025-26 Ionic 6 (prefer all the upgrades on the 26) for a long term purchase and I will be putting 18" wheels on the car if I happen to end up with 20's on an SEL or Limited trim. Although we don't know how the trim levels will match up on the 2026's yet. I will not have a long term Ionic 6 with 20" wheels and lose that 15% of range.

 

Could be wrong here, but I think the energy measurement gets reset automatically upon charging.

 

Am curious if anyone is getting better than an average of 3.8 miles/KWhr? Have had this Ioniq 6 since Jan 2024, and just took it on our first road trip SF area to LA area. Best I could get, at 65mph set on the SCC with minimal AC, was averaging 3.7. The GOM meter implies something over 4 is not only possible, but ordinary!
(Incidentally, used the Tesla adapter, and it worked perfectly!)

I regularly get high readings on local low speed journeys. 5s 6s up to 8s. On highway journeys of around 60 miles 3.8 would be the norm (still summer air temperatures)

 

On my I5, high 3’s to low 4’s is my norm. But I have gotten as high as high 4s, even low 5s on local driving but not for long. Never on highway driving. I found a sweet spot of around 68 mph on a recent trip to Hilton Head Island which had the GOM in the high 3s, above that low 3s quickly appeared. The M/Kwh was of concern as the stretch along I 20 from I-75 to Savannah has few charging opportunities other than Tesla. It’s September and after numerous calls, I got an email telling me that I was officially on the waiting list for the NACS adapter which could take up to 16 weeks to arrive.

 

Am curious if anyone is getting better than an average of 3.8 miles/KWhr? Have had this Ioniq 6 since Jan 2024, and just took it on our first road trip SF area to LA area. Best I could get, at 65mph set on the SCC with minimal AC, was averaging 3.7. The GOM meter implies something over 4 is not only possible, but ordinary!
(Incidentally, used the Tesla adapter, and it worked perfectly!)

I have a 2025 Limited and the best I get is 3.7 to 3.8 mi./KWhr.

 

No winter driving yet - but my total which includes around town, long road trips (up and down mountains) - over about 6,000 total kms since May is 15.1 kW/100km.

This is about 4m/kW

Driving a 2025 AWD with 20" wheels.

(...am considering 18" ...these would apparently drop my energy consumption to about 12.8kW/100km. )

It may be worth it.

 

It may be worth it.

By what measure? If you are going for boasting rights, maybe. But you won't get top dollar selling used tires and rims, so you have to figure at least 50% of the cost of new tires and rims being the payoff target.

Napkin calculation suggests you may save less than $100 per year assuming 20,000km and $.12/kWh utility rates. You might get an extra 10-15kms per charge, so on trips it might be a little help, but not a game changer.

BTW, kW are instantaneous power and kWh are quantity. I only mention this because using incorrect terminology tends to confuse people. You are trying to say the equivalent of miles (or kms) per gallon (or liter). Or in this case, how many gallons or liters needed to go 100 miles or kms.

I went through this mental exercise when I leased mine, but figured it wouldn't add enough range to skip the short charge/restroom break I need on my most common road trip route. Currently, I would arrive at the main charging stop which is about 260 miles from home with little to no remaining range (and a screeching co-pilot/wife) if I skipped the short charge 60 miles short of it. Putting smaller rims/tires might increase that to 20-30 miles which is still pretty tight, but I generally need to stop to use restrooms anyway, so I just couldn't justify the expense.

 

Arob

Thank you for the kWh correction - my mistake (got it now.)

WRT: 18inch wheels - I will need to get a set of snow tires soon - so for me the question/s are more along these lines:

1) Will a very good set of ice radial snow tires fit my 20inch rims?
2) Are 20 inch rims best for snow tires (or is 18 inch better)?
2) If 20 inch do work well for snow tires then should I run in summer on 18"? (When I do most of my driving anyways)
3) Or should I mount and remove 20" snow tires for the period of time when they are needed and skip 18 inch wheels altogether?

(I've not really decided)

Financially for the energy saved and battery efficiency - you are correct - financial savings would be marginal if any.

Cheers!

 

Am curious if anyone is getting better than an average of 3.8 miles/KWhr? Have had this Ioniq 6 since Jan 2024, and just took it on our first road trip SF area to LA area. Best I could get, at 65mph set on the SCC with minimal AC, was averaging 3.7. The GOM meter implies something over 4 is not only possible, but ordinary!
(Incidentally, used the Tesla adapter, and it worked perfectly!)

--------------
17,951 miles ago I reset my trip odo, and in the 503 driving hours that followed, my I6 AWD tells me I averaged 4.6mi/KWhr.
That mid-4's number is consistent with what I usually see on the After Recharge version of that same screen.
For over a year I've been using level 0 regen and braking with my paddles as much as possible (I liken it to downshifting my motorcycle). Oh, and my tire pressure is 43psi, all four corners

 

I gather you don't have much highway driving in that figure as on the highway (75 mph in NV) and especially in the summer can only get 3.3-3.9 m/kWh. Over my first 4800 miles (about 60 hwy/40 city) I am averaging 3.6 m/kWh. If I do solely city driving (pretty rare) I can easily get 5.0 m/kWh. I use Auto Level 1 (like the car keeping an eye in front) and use the paddles to slow down at lights and stop signs (Auto 1 - Auto 3). Not really interested in I-Pedal (I know there are a lot of fans of it but just doesn't click with me).

 

We just returned from an 8,690 mile road trip. A lot of it was in the west and north with 80 mph speed limits. We never had any problems with range. Efficiencies went from 3.3 or 3.4 in the east with 70 mph limits to 2.4 to 2.8 in the 80 mph zones, especially while bucking headwinds. But range was still no problem. We just charged a couple minutes longer and spent a little more money. That includes preconditioning before the 1st charge of the day on cold mornings and battery cooling after every charge every time over however many dozen times we charged. (Still working on documenting the charges.)

But that's for our '25 Ioniq 5 RWD. If you're lugging around AWD, big wheels, and still have the 77.4 kWh vs 84 kWh battery, things might be a little more challenging, but wouldn't be difficult. Then again, with an Ioniq 6 it would be even easier.