Problems · NHTSA complaints
2011 Hyundai Sonata Hybrid problems
Owners filed 96 complaints about the 2011 Hyundai Sonata Hybrid with NHTSA between Aug 2013 and Aug 2026. The most-cited component is engine (40).
Complaints
96
Filed with NHTSA
Crashes
6
Reported by owners
Fires
5
Reported by owners
Injuries
5
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Engine40
- Steering18
- Electrical system17
- Service brakes13
- Power train10
- Air bags8
- Electronic stability control (esc)6
- Service brakes, hydraulic5
- Vehicle speed control5
- Seat belts3
- Wheels3
- Suspension2
- Fuel/propulsion system2
- Engine and engine cooling1
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Oct 29, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
5
5
5
11
16
20
16
2
6
3
1
4
1
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2013 | 5 |
| 2014 | 5 |
| 2015 | 5 |
| 2016 | 11 |
| 2017 | 16 |
| 2018 | 20 |
| 2019 | 16 |
| 2020 | 2 |
| 2021 | 6 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 4 |
| 2025 | 1 |
| 2026 | 1 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Engine
40 reports3 fires1 related recall
“The contact owns a 2011 Hyundai Sonata Hybrid. The contact stated that while driving at an undisclosed speed, there was an abnormally loud sound coming from the vehicle. The contact turned off the vehicle, and while inspecting the vehicle, the contact became aware that there was a puddle of oil on the ground underneath the vehicle. No warning lights were illuminated. The vehicle was taken to a nearby Ford dealer, where it was diagnosed with camshaft and engine failure. The contact was informed that the camshaft and the engine needed to be replaced. The vehicle was not repaired. The contact was informed of Technical Service Bulletin: 22-EM-006H-2. The contact was advised to tow the vehicle to a Hyundai dealer for assistance. The vehicle was towed to an alternate dealer where the failure was confirmed. The vehicle was not repaired. The manufacturer was made aware of the failure, and a case was filed. In addition, the contact was informed that the repair was not covered under warranty. The contact was informed that the repair was denied because of the previous owner's negligence with maintenance of the vehicle. The failure mileage was approximately 120,744.”
Steering
18 reports
“The contact owns a 2011 Hyundai Sonata Hybrid. The contact stated that upon starting or reversing, the steering wheel seized. There were no warning lights illuminated. The vehicle was towed to the local dealer, where an unknown diagnosis was provided. The vehicle was not repaired. The manufacturer informed the contact that there was no warranty coverage on the vehicle for the failure. The failure mileage was approximately 82,000.”
Electrical system
17 reports1 crash
“MAY BE ENGINE OR ELECTRICAL OR SOFTWARE PROBLEM; LOST POWER ON INTERSTATE FROM 70 MPH TO 20 MPH THEN GOT OFF EXIT, SHUT DOWN AND WAITED A FEW MINUTES AND THEN STARTED IT UP AND NO PROBLEM AGAIN; HAS HAPPENED 3 TIMES IN LAST 4 MONTHS; TAKEN TO DEALER TWICE WITHOUT SUCCESS- NO CODES IN COMPUTER; NOW CAR IS SPUTTERING AND JUMPING WHEN GAS IS APPLIED AFTER SLOW DOWN/STOP. NOW GETTING FLASHING/BLINKS ON/OFF READY LIGHT ON DASH. SAW NHTSA ID NUMBER 10056327 AND SOUNDS LIKE MY ISSUE. DRIVE 40 MILES ONE WAY TO WORK ON INTERSTATE DAILY AND AM GETTING VERY CONCERNED ABOUT LOSING POWER. I HAVE REPORTED IT TO DEALER TWICE AND NOTHING DONE ABOUT IT AND REPORTED IT HYUNDIA CUSTOMER SERVICE CENTER WITHOUT A CALL BACK TO DATE.”
Service brakes
13 reports3 crashes
“The contact owns a 2011 Hyundai Sonata Hybrid. The contact stated that upon retrieving the vehicle from the local dealer after a recall repair, the brakes were inoperable. There were no warning lights illuminated. The vehicle was taken to the local dealer, where a diagnostic test was completed. The vehicle was repaired, but the failure recurred. The manufacturer was not contacted. The failure mileage was unknown.”
Power train
10 reports
“ORIGINAL OWNER OF VEHICLE SINCE 2012. IN LAST TWO YEARS, TRANSMISSION REPLACED TWICE. NO CLEAR ANSWERS FROM MANUFACTURER AS 100K MILE WARRANTY NEARS END. THIS TIME DEALERSHIP HELD VEHICLE 2 WEEKS BEFORE COMMENCING REPAIR. SPEAKING TO OTHER OWNERS, SAME PROBLEM WITHIN 3 YEARS OF OWNERSHIP. WHEN IN MOTION TRANSMISSION WILL FAIL AND CAR WILL NOT SHIFT INTO GEAR CAUSING BREAKDOWN IN ROADWAY. THE FIRST TIME, GOT STRANDED ON HIGHWAY, ABLE TO GLIDE TO THE SHOULDER. SECOND TIME, NOTICED SYSTEM SLIPPING DURING SHIFTS AND TOOK DIRECTLY BACK TO DEALERSHIP. *TR”
Air bags
8 reports3 crashes1 fire
“The contact owns a 2011 Hyundai Sonata Hybrid. The contact stated while starting the vehicle, the front driver's side air bag warning light was illuminated. The contact called the local dealer and made them aware of the failure. The vehicle was not diagnosed or repaired. The manufacturer informed the contact that NHTSA Campaign Number: 18V137000 (Seat Belts, Air Bags) was serviced by the previous owner in 2020. The failure mileage was approximately 141,000.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 29, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.