There are 2 owner-reported driver assist & adas complaints for the 2021 Hyundai Konain NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The Blind Spot Collision Warning (BSCW) light comes on 10 minutes into a drive (we live in a rural area and drive two lane roads for at least 25 miles before multiple lanes). I have had the car in for service on the system twice before learning that this is built into the system. Others are having the same problem, (see the two Hyundai Kona forum links below). I've spent about $600 trying to solve a problem Kona already knows existed (see p. 5-52 of the 2021 Kona owner's manual). Of course I hadn't read the entire manual, but I feel the service technicians should have. I will attempt to put a more detailed description in the files below. [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
We bought the car in July and owned it 70 days and 1,530 miles. The Automatic Emergency Breaking engaged several times without any reason. Sometimes at lower speeds <40 and sometimes on the freeway >60. The last time was at 20 mph in a school zone and we were rear ended because of the unexpected stop. We had several near misses on the freeway, but the cars behind us managed to avoid us. The car has severe damage to the bumper, tailgate and Blind Spot warning, parking collision warning and rear cross traffic warning because of the accident and the car has been in the body shop awaiting parts/repair for the nearly entire month of September. No one was hurt and we didn't have the car long enough to take it back to the dealer to have the brake system checked. The accident would not have happened if the Automatic Emergency Braking had worked properly.
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 25, 2026