There are 3 owner-reported engine complaints for the 2026 Kia K5in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2026 Kia K5. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer, where it was diagnosed with an engine harness failure. The contact was informed that the engine harness needed to be replaced. The vehicle was not repaired. The contact was informed that the parts were ordered and would be delivered within a week. The manufacturer was made aware of the failure. The contact was informed that the dealer would be contacted. The failure mileage was approximately 89.
Low oil engine warning. Oil level is okay. Car has 80 miles on it, total.
The contact owns a 2026 Kia K5. The contact stated that after starting the vehicle, the engine immediately started to rev extremely high, and smoke was coming from under the hood, and the front passenger side lights failed to illuminate. There was a sizzling sound coming from the engine compartment, and the hood was very hot to the touch. The contact turned off the vehicle, and a tow truck company was contacted. The contact stated that while raising the vehicle onto the tow truck, hundreds of shards of black plastic fell from the vehicle onto the driveway along with a pink colored liquid. The vehicle was towed to the local dealer. The cause of the failure was not yet determined. The manufacturer was not yet contacted. After the failure, the contact received several engine failure codes on the Phone App. No further information was available. The failure mileage was 110.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026