Kia K4 engine problems by year
7 NHTSA owner complaints name the engine across 1 K4 model years. The most reported year is 2025 with 7 reports.
| Year | Engine reports | Share | Median mileage | |
|---|---|---|---|---|
| 2025 K4 | 7 | 16% | — |
Share is the fraction of that year’s complaints naming the engine. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.