Hyundai's 404-Mile EV Range Figure Sounds Amazing Until You Read The Fine Print

Hyundai's new Ioniq V, the fastback sedan produced by the company's Beijing joint venture for the Chinese market, will go up to 404 miles (650 km), according to CLTC. This is impressive because it does this on a 66.8 kWh LFP battery, compared to the Ioniq 6, Hyundai's own benchmark for efficiency, which needs a 77.4 kWh pack to achieve 342 miles on the EPA test cycle. The BYD Seal 06, a competitor in China, manages to get up to 339 miles using a 56.6 kWh battery based on the CLTC standards. The Ioniq V achieves long-range performance relative to its size, so the next question is: How can Hyundai make that happen?

How CLTC Numbers Translate to the Real World

Here's the catch: The 404 miles/650 km rating is based on CLTC ratings, which are based on a testing regimen that includes lower average speed tests versus the EPA. Based on averages over many vehicles tested, CLTC ratings are typically approximately 20-30 percent greater than their EPA equivalent. For reference, the Tesla Model 3 LR available in China is rated at 515 miles/830km (CLTC), while pretty much the same model in the US is EPA-rated at 363 miles.

If we apply a 30 percent subtraction to the Ioniq V's 404-mile CLTC rating, we arrive at an estimated EPA equivalent of approximately 270 miles of range. This is good, but certainly not nearly as dramatic as the headline figure. The lower spec 53.5 kWh battery pack rated at up to 335 miles (540 km) CLTC would likely equate to about 235 miles in EPA terms. It's not class-leading, but competitive for the battery size.

What It's Up Against

The Ioniq V enters a segment where range efficiency is becoming the real battleground. The Ioniq 6 in 53-kWh standard range guise is EPA-rated at 240 miles, so the Ioniq V's long-range version, with a similar but slightly larger 66.8 kWh pack, would need to meaningfully beat that to stand out in Western terms. That's a reasonable ask, given the Ioniq 6 is one of the more aerodynamic sedans on the market. The real story is efficiency. Getting 404 miles from under 67 kWh means Hyundai has done serious work on consumption, and if even 75–80 percent of that transfers to harder test cycles, the Ioniq V could be a genuinely compelling package, before you even consider the 800V architecture, the 27-inch interior screen, or whatever Hyundai prices it at when it lands.

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This story was originally published June 17, 2026 at 1:30 PM.