There are 1 owner-reported driver assist & adas complaints for the 2018 Kia Optimain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
TL* THE CONTACT OWNS A 2018 KIA OPTIMA. WHILE OPERATING THE VEHICLE AT VARIOUS SPEEDS, THE FORWARD COLLISION WARNING SYSTEM AND THE FORWARD COLLISION BRAKING SYSTEM DID NOT OPERATE AS INTENDED. WHILE DRIVING APPROXIMATELY TWO FEET BEHIND ANOTHER VEHICLE, THE CONTACT WAS NOT WARNED OF THE OTHER VEHICLE AND THE SYSTEM DID NOT STOP THE VEHICLE WHEN NECESSARY. THE VEHICLE WAS TAKEN TO THE LOCAL DEALER (MORITZ KIA FORT WORTH, 8501 I-30 WEST, FORT WORTH, TX) WHO WAS UNABLE TO DETERMINE THE CAUSE OF THE FAILURES. THE MANUFACTURER WAS NOTIFIED AND NO SOLUTION WAS OFFERED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 300. *TT
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