2027 Hyundai Ioniq 6 vs 2027 Kia K4
The Hyundai Ioniq 6 wins clearly, 100 to 74.4, on fuel & range.
2027 Hyundai Ioniq 6
The 2027 Hyundai Ioniq 6 is sold in the U.S. as an electric midsize sedan. Its longest-range version, the Ioniq 6 N, is EPA-rated at 245 miles with 88 MPGe comb…
2027 Kia K4
The 2027 Kia K4 is sold in the U.S. as a gas midsize sedan with 5 EPA-rated configurations. The most efficient version, the K4 4DR with DMS, is EPA-rated at 33 …
2027 Hyundai Ioniq 6
Clear winThe Hyundai Ioniq 6 wins clearly, 100 to 74.4, on fuel & range.
| Category · weight | 2027 Hyundai Ioniq 6overall 100 | 2027 Kia K4overall 74.4 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pricenot compared | Specs not available | Specs not available | |||||||||
| Fuel & rangew 3 | 100 | 40.2 | |||||||||
EPA annual fuel cost and combined mpg / MPGe; EV range when both are electric. | |||||||||||
| Safetyw 4 | 100 | 100 | |||||||||
NHTSA 5-Star rating, WhichTrim Safety Signal (open recalls by severity), owner complaints, standard driver-assist features (from the press kit, or from what the manufacturer filed with NHTSA where there is none). Open park-outside / do-not-drive advisories cost 25 points. | |||||||||||
| Space & cargonot compared | Specs not available | Specs not available | |||||||||
| Performancenot compared | Specs not available | Specs not available | |||||||||
| Tech & comfortnot compared | Specs not available | Specs not available | |||||||||
| Warrantynot compared | Specs not available | Specs not available | |||||||||
| Overall | 100 | 74.4 | |||||||||
Safety-only comparison · 2 of 7 categories compared · specs not available for Hyundai Ioniq 6 and Kia K4
Hyundai Ioniq 6: safety only (EPA and NHTSA record; specs not available) · Kia K4: safety only (EPA and NHTSA record; specs not available). Pick a trim in the tool to compare any other trim.
Where the gap is
the biggest differences, from the scorecard's own numbersWhere the 2027 Hyundai Ioniq 6 wins
- It is rated 88 combined against 33 (EPA mpg or MPGe).
- It costs $1,200 a year less to fuel on the EPA's estimate ($850 against $2,050).
What they share
- A Safety Signal of 100.
Ranked by how far apart the two score on each measure, so a price gap and a horsepower gap are compared on the same scale. Every figure is on this page.
Specifications side by side
specs not availableSafety record
NHTSA recalls, complaints, NCAPHyundai Ioniq 6
Top recalls
No recalls on file.
Kia K4
Top recalls
No recalls on file.
Ownership
EPA, manufacturer warranty| Hyundai Ioniq 6 | Kia K4 | |
|---|---|---|
| Price | — | — |
| Price range across trims | — | — |
| Powertrains | BEV | GAS |
| EPA configuration compared | Ioniq 6 N | K4 4DR with DMS |
| Combined mpg / MPGe | 88 | 33 |
| EPA annual fuel cost | $850 | $2,050 |
| EV range | 245 mi | — |
| Basic warranty | — | — |
| Powertrain warranty | — | — |
| Roadside assistance | — | — |
Common questions
Source: EPA, NHTSA and manufacturer press kitsWhich is better, the 2027 Hyundai Ioniq 6 or the 2027 Kia K4?
The Hyundai Ioniq 6 wins clearly, 100 to 74.4, on fuel & range. On WhichTrim's default weights the 2027 Hyundai Ioniq 6 scores 100 and the 2027 Kia K4 74.4. The weights are yours to change — move what you care about and the verdict recalculates on the page.
Which has the better safety record, the 2027 Hyundai Ioniq 6 or the 2027 Kia K4?
2027 Hyundai Ioniq 6: no NHTSA rating yet, grade A, 0 recalls. 2027 Kia K4: no NHTSA rating yet, grade A, 0 recalls. Crash ratings come from NHTSA's own tests; the grade is WhichTrim's read of the recall record, and the two can disagree.
What are the biggest differences between the 2027 Hyundai Ioniq 6 and the 2027 Kia K4?
Where the 2027 Hyundai Ioniq 6 wins: it is rated 88 combined against 33 (EPA mpg or MPGe) and costs $1,200 a year less to fuel on the EPA's estimate ($850 against $2,050). What they share: a Safety Signal of 100.