2021 Hyundai Sonata: Reliability Data

Source: NHTSA — 156 complaints
156
Total Complaints
24,725mi
Median Mileage
ENGINE
Top Issue
11
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

7,402 25th Percentile
24,725 Median Mileage
46,250 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ENGINE
29
UNKNOWN OR OTHER
27
POWER TRAIN
19
ELECTRICAL SYSTEM
14
FUEL/PROPULSION SYSTEM
14
VISIBILITY/WIPER
8
FUEL SYSTEM, GASOLINE
6
AIR BAGS
4
FORWARD COLLISION AVOIDANCE: WARNINGS
4
STRUCTURE:BODY
3

Severity Assessment

11
Crashes
0
Fires
24
Injuries
0
Deaths

Sample Complaint Reports

"PANORAMIC SUNROOF EXPLOSION. HAPPENED ON OPEN HIGHWAY ROAD WITH NO CAR IN NEAR VICINITY OR SIGN OF ANY KIND OF DEBRIS HITTING THE VEHICLE."
"SEEMS TO BE AN ISSUE WITH THE WIRELESS APPLE CAR PLAY. REGARDLESS IF THE VEHICLE IS IN MOTION OR NOT IT LOSES CONNECTIVITY. WHILE DRIVING THIS CAUSE YOU TO TAKE YOUR EYES OFF THE ROAD AS MESSAGES APPEAR ON THEIR INFOTAINMENT SYSTEM. CALLS ARE DROPPED, NAVIGATION STOPS SO WHILE YOU ARE LOOKING AT..."
"Excessive wind noise is coming from the driver side window when speeds are over 55mph+. A lot of other owners on the forums are experiencing the same problem."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28