There are 2 owner-reported engine complaints for the 2021 Kia Rioin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
I was driving 60-70 miles an hour for 45 minutes then car lost all acceleration and engine light came on. I pulled over immediately turned the car off. Turned it back on drove 1/4 of a mile and same thing happened. I pulled over turned car off and had it towed to the dealership.
Vehicle has less than 4000 miles and throttle body had to be replaced
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