Kia K4 Problems by Model Year

NHTSA recorded 60 consumer complaints across the 2 model years of the Kia K4 (2025–2026) that have at least 5 complaints. 2025 has the most, with 47. Across all years, the part named most often is other or unknown (17 mentions). Pick a model year below to see its parts, mileage, recalls and service bulletins.

All K4 model years

Years with fewer than 5 complaints are not listed. The score compares years of the same model, allowing for the era and for how long each year has collected complaints: 50 is a typical year, lower means fewer complaints. It is not adjusted for sales volume.

Parts named most often, all years

Counts add up complaint mentions across the listed years. A complaint can name several parts.

• Other or unknown17 20%
• Electrical system16 18%
• Lane departure11 13%
• Steering10 11%
• Forward collision avoidance9 10%
• Transmission and drivetrain8 9.2%
• Engine8 9.2%
• Air bags8 9.2%

Example complaints

One per model year, chosen for length and detail. Personal details are removed. They are consumer reports, not findings.

Other Kia models

All Kia models →