By VoltAdmin·4 replies
Hyundai and Kia share the E-GMP platform between the Ioniq 5 and EV6. They have the same motors, the same battery options, and the same 800V architecture. On paper they're nearly identical. In practice, they feel like different cars. I leased a 2022 Ioniq 5 RWD and my neighbor has a 2023 EV6 GT-Line AWD, so I've had real seat time in both.
Where they're the same
800V charging architecture means both cars can hit 350kW peak charging rates at compatible chargers (Electrify America V3 stalls, some Blink 350kW stalls). In practice I've seen 220–230kW sustained, which is excellent. A 10–80% charge in about 18 minutes.
Driving range in the RWD 77.4kWh version is nearly identical: Ioniq 5 EPA-rated 303 miles, EV6 EPA-rated 310 miles. Real-world they're within 5 miles of each other in my experience.
Vehicle-to-load (V2L) is a genuinely useful feature on both. The 3.6kW export capability means you can run a power tool, a camp kitchen, or charge another EV. I've used mine to power a job site twice and it worked flawlessly.
Where the Ioniq 5 wins
Interior space is not close. The Ioniq 5's longer wheelbase and boxy proportions create a genuinely roomier interior. The rear seat slides forward and back (unusual feature). The floating center console slides too. It feels like a micro-apartment on wheels. My 6'2" brother-in-law fits in the rear seat without complaining, which is not true of many EVs.
The interior design is more interesting. The retro-futurist aesthetic with the pixel design language is distinctive in a market full of anonymous rounded shapes. Like it or hate it, it's memorable.
Where the EV6 wins
It's a better driver's car. Slightly lower, slightly wider stance, more communicative steering, and in GT-Line trim with the large battery + AWD, it pulls hard. The GT version (limited production, don't confuse with GT-Line) is a genuine 3.4-second 0–60 machine.
The rear hatch is easier to use for cargo. The Ioniq 5's cargo area is deep but the opening is narrower.
The real question
Which you prefer comes down to: do you prioritize interior space and design (Ioniq 5) or driving dynamics and easier cargo access (EV6)? Both are excellent cars. I'd rent each one for a day before deciding.
What made you choose one over the other if you own either?
I went Ioniq 5 over EV6 specifically because of the rear legroom. I have two tall teenagers and they need that space. The sliding rear seat was the deciding feature. My daughter also has a thing about the exterior design — she called the EV6 "too sporty-looking" and the Ioniq 5 "actually interesting." Teenagers choosing EVs based on aesthetics is a thing now apparently.
↩ replying to @KilowattKarl
My teenage niece calls the Polestar 2 'the serious one' and the Ioniq 5 'the cool one.' Teenagers choosing EVs based on aesthetics is now a real cohort and the Ioniq 5 design language is winning that comparison in every group I've seen. Your daughter's reaction is statistically representative.
I want to add a charging network note that isn't in the comparison: both cars support CCS (the standard) and have NACS adapters available now (or coming soon). But neither has access to the Supercharger network at the charger speeds that Tesla owners get — non-Tesla vehicles on Superchargers are currently limited to lower power at most stalls. This gap is closing as Tesla upgrades hardware, but it's worth knowing.
↩ replying to @SolarSarah
Came from an Ioniq 5 RWD to the Ioniq 6 specifically for the efficiency gain. Same E-GMP platform, same motor, completely different aerodynamics — I gained about 25–30 Wh/mile in my driving. If efficiency matters more than cargo space, the 6 is worth a test drive before committing to the 5.
The 800V architecture deserves more attention in this comparison. The benefit isn't just fast charging speed — it's cable and component sizing. At 800V the same power transfer requires half the current of a 400V system. Smaller wiring, less heat, lower resistive losses. Over the life of the vehicle this shows up as slightly more efficient charging and slightly less degradation from thermal stress during DC fast charging. It's a fundamental architecture advantage that both cars share, and most competitors (including Tesla until very recently) don't have it.
↩ replying to @EVengineer
The 800V benefit I didn't expect: winter charging. My Kona at 400V throttles hard in cold weather because battery preconditioning is less effective at the lower voltage. An 800V architecture with better thermal management handles cold fast charging much more gracefully. The architecture advantage is most visible in the worst conditions.
↩ replying to @EVengineer
One variable that shifts the comparison in Phoenix: both packs run hotter in 115°F ambient than the thermal specs suggest. The Ioniq 5's larger pack distributes the load across more cells under sustained high-temp charging. Small edge on paper, but in a climate where charging at 2pm in August is sometimes unavoidable, it's the kind of margin that compounds over five years.
Does anyone have long-term reliability data on either of these? I've seen some stories about early Ioniq 5 navigation module failures and some EV6 charging port issues, but I don't know if those are widespread or isolated. Hyundai/Kia's EV reliability reputation is still being established.
@packrat I'm 22 months in on the Ioniq 5 with zero issues beyond the nav update that was pushed OTA (and worked fine). The forum consensus on the early nav module failures seems to be that it was a batch of modules from one supplier, caught early, and subsequent production cars don't have the issue. My car hasn't had it. For reliability data I'd look at J.D. Power IQS scores and the Ioniq 5 forums on Reddit — the owners are vocal about problems and you'd see a pattern if there was a widespread one.
