Hyundai Elantra vs Kia K4
2 head-to-heads across the 2025 and 2026 model years, side by side. At default weights the record is level, 1–1. Each verdict below is the one its own page prints — price, fuel, safety, space, performance, tech and warranty from EPA, NHTSA and manufacturer data — and the weights are yours to change on any of them.
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Year by year
2 head-to-heads · verdicts at default weightsClear win 6+ points · Edge 2–6 · Toss-up under 2
Across the years, category by category
2 scored head-to-headsThe Elantra leads on fuel & range in 2 of 2, performance in 2 of 2; the K4 on price in 2 of 2, safety in 2 of 2, space & cargo in 2 of 2. Category scores are 0–100 from the data on each pair page; a lead here means that model year scored higher in the category, whatever the weights.
| Category | Elantra leads | K4 leads | Level |
|---|---|---|---|
| Price | 0 | 2 | 0 |
| Fuel & range | 2 | 0 | 0 |
| Safety | 0 | 2 | 0 |
| Space & cargo | 0 | 2 | 0 |
| Performance | 2 | 0 | 0 |
| Tech & comfort | 0 | 2 | 0 |
Common questions about the Elantra vs K4
Source: EPA, NHTSA and manufacturer press kitsWhich is better, the Hyundai Elantra or the Kia K4?
In the newest scored pairing, the 2026 Elantra against the 2026 K4: The Hyundai Elantra edges it, 92.7 to 90.7, on fuel & range, performance. The Kia K4 is ahead on tech & comfort and safety. Raise the tech & comfort weight from 3 to 4.8 and it flips. Across the 2 head-to-heads scored, the record is level, 1–1. Open the 2026 pair to change the weights.
Does the answer change from one model year to the next?
Yes. At default weights the verdict went 2026 Elantra vs 2026 K4: Elantra; 2025 Elantra vs 2025 K4: K4. The weights on each pair page say what tips it.
Where is the biggest difference between the Hyundai Elantra and the Kia K4?
The Elantra leads on fuel & range in 2 of 2, performance in 2 of 2; the K4 on price in 2 of 2, safety in 2 of 2, space & cargo in 2 of 2. Every count comes from the category scores on the pair pages linked above, which use EPA, NHTSA and manufacturer press-kit data.
How does WhichTrim decide which vehicle wins?
Each of seven categories — price, fuel and range, safety, space and cargo, performance, tech and comfort, warranty — is scored 0–100 from the data on the page. Relative measures give 100 to the better vehicle and a proportional share to the other; NHTSA stars and the Safety Signal use their own scales. The overall score is the weighted mean at the default weights (price 4, safety 4, fuel 3, tech 3, space 2, performance 2, warranty 2). A margin of 6 points or more is a clear win, 2 to 6 an edge, under 2 a toss-up. Every pair page has sliders to change the weights.