Engine complaints and recalls from NHTSA
Summary
The 2021 Hyundai sonata has 17 NHTSA engine complaints and 0 engine-related recalls.
17
Complaints
0
Recalls
0
Injuries Reported
Data source: National Highway Traffic Safety Administration (NHTSA) · Last updated April 9, 2026
| Date ↓ | Component | Summary |
|---|---|---|
| Feb 19, 2026 | ENGINE,FUEL/PROPULSION SYSTEM,VISIBILITY/WIPER | The internal core of the Exhaust Heat Recovery System (EHRS), part of the center muffler/front pipe ... |
| Feb 9, 2026 | ENGINE,VISIBILITY/WIPER | The EHRS coolant system failed and had a leak causing the coolant to be excessively burned off as th... |
| Jan 28, 2026 | ENGINE,FUEL/PROPULSION SYSTEM | On i believe 1/14/26, my check engine light came on. Scheduled appt.for 1/16/26 for diagnostic. Seve... |
| Jan 7, 2026 | ENGINE,FUEL/PROPULSION SYSTEM | I was driving my 2021 Hyundai Sonata at approximately 3:00 AM when the vehicle suddenly began shakin... |
| Jan 1, 2026 | ENGINE | Hyundai technical service bulletin 23-EM-009H (EHRS COOLANT LEAK) - AKA a faulty heat exchange that ... |
| May 23, 2024 | ENGINE AND ENGINE COOLING | The contact owns a 2021 Hyundai Sonata. The contact stated while driving 15 MPH, the contact noticed... |
| May 8, 2024 | ENGINE | I purchased this vehicle brand new. It is still under factory warranty. It has approximately 14k m... |
| Mar 18, 2024 | ENGINE | faulty engine thermostat |
| Dec 8, 2023 | ENGINE | I was on the highway going 60 mph then all of a sudden my vehicles rpm's jumped way up to 8 and comp... |
| Oct 18, 2023 | ENGINE | I have a 2021 Hyundai Sonata SEL with a Smartstream 2.5L engine w/ GDI & MPI. I have have always hea... |
| Sep 15, 2023 | ENGINE | The contact owns a 2021 Hyundai Sonata. The contact stated while driving 45 MPH, the vehicle inadver... |
| Jun 19, 2023 | ENGINE,FORWARD COLLISION AVOIDANCE | The contact owns a 2021 Hyundai Sonata. The contact stated while driving at an undisclosed speed, th... |
| Jun 4, 2023 | ENGINE,FUEL/PROPULSION SYSTEM | When attempting to pass other vehicles or under quick acceleration such as an on ramp to the highway... |
| Mar 7, 2023 | ENGINE | My 2021 Sonata has 32,000 miles & it broke down in the middle of the road. My safety & my daughters ... |
| Nov 1, 2022 | ENGINE | The issue is well known across the DN8 platform, hundreds if not thousands of people have this probl... |
| Oct 17, 2022 | ENGINE,FUEL/PROPULSION SYSTEM | Oct 12: Engine stalled exiting I95 in Kittery Maine. Engine light flashed but did not stay on. Was... |
| Dec 2, 2021 | ENGINE | The contact owns a 2021 Hyundai Sonata. The contact stated that while the vehicle was at an independ... |