There are 1 owner-reported powertrain & transmission complaints for the 2018 Kia Rioin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
On 10/02/2021 - Was at a stop, put car in drive press the peddle car accelerated at high speed, miss another car and hit tree. Accident cause by acceleration issue with KIA Rio. Need advice on how to get KIA to replace total vehicle. Auto Insurance is just calling it a accident.
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