There are 2 owner-reported engine complaints for the 2025 Kia K5in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
Third time that this happened when I step on the gas you're accelerate the transmission wines when I'm trying to merge I have to slow the car down and take my foot off the accelerator and then when I put my foot on the celebrator there's a car really close to me
The contact owns a 2025 Kia K5. The contact stated that the engine made an abnormally loud sound while driving and idling. The vehicle was taken to the dealer several times, but the failure could not be duplicated. The vehicle was taken to the dealer, where it was diagnosed that the tensioner and the pulley were worn out and needed to be replaced. The vehicle was repaired; however, the contact stated while driving 55 MPH six days later, the service, the battery, the low-pressure oil warning lights, and several other unknown warning lights were illuminated. The contact stated that the steering wheel and the brakes locked, causing the contact to lose control of the vehicle. The vehicle then stalled in the middle of the road. The contact stated that the vehicle that was behind swerved to avoid hitting the contact's vehicle and unexpectedly crashed into another vehicle. The contact sustained mental injuries. The driver that was behind the contact's vehicle sustained significant bleeding from the forehead, back, and neck pain, and abrasions on the neck, arms, legs, and other parts of the body. The driver's vehicle was significantly damaged. The other driver whose vehicle was crashed into was an older individual, who sustained a broken arm, broken neck and collar bone, abrasions on the facial area, injured back, and a broken nose. The driver's vehicle was totaled. Both drivers were transported to the hospital by ambulance. No further information was provided. A police report was filed, but the contact did not have the police report information available. The vehicle was towed to a second dealer, Kia Delray(2255 S Federal Hwy, Delray Beach, FL 33483), where it was determined that the pulley and the tensioner had detached. The vehicle was not repaired. The manufacturer was notified of the failure and several cases were opened, but no further assistance was provided. The failure mileage was approximately 2,230.
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