Problems · NHTSA complaints

2015 Hyundai Sonata Hybrid problems

Owners filed 54 complaints about the 2015 Hyundai Sonata Hybrid with NHTSA between May 2015 and Oct 2026. The most-cited component is electrical system (24).

Complaints
54
Filed with NHTSA
Crashes
4
Reported by owners
Fires
3
Reported by owners
Injuries
6
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Electrical system24
  2. Engine19
  3. Service brakes8
  4. Power train7
  5. Service brakes, hydraulic5
  6. Vehicle speed control4
  7. Fuel/propulsion system2
  8. Engine and engine cooling2
  9. Hybrid propulsion system2
  10. Suspension2
  11. Air bags1
  12. Service brakes, air1
  13. Electronic stability control (esc)1
  14. Seat belts1

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 28, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20154
20166
20178
20189
20195
20200
20213
20222
20234
20245
20251
20267

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.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Electrical system

24 reports2 crashes1 fire
“The contact's sister-in-law owned a 2015 Hyundai Sonata Hybrid. The contact stated that while the vehicle owner was driving 55 MPH, the owner noticed smoke coming from under the hood. The owner parked and exited the vehicle, and while attempting to inspect the vehicle, the owner noticed flames coming from underneath the hood, and the fire extended to the cabin of the vehicle. The Fire Department extinguished the fire and informed the owner that the fire had gone through the firewall and entered the interior of the vehicle. The front seats of the vehicle were completely burned. The vehicle was towed to a local tow yard and was deemed a total loss. The vehicle was under liability insurance. A Police report was filed. The contact sustained back pain from riding in the police officers vehicle. Additionally, the contact stated that the dealer had repaired the vehicle for ABS failure two weeks prior to the incident. The dealer was notified of the fire incident but informed the contact that an inspection could not reveal the cause of the fire. The manufacturer was contacted by phone, and a case was filed. The failure mileage was approximately 98,000.”
Owner complaint to NHTSAFiled Sep 15, 2026Electrical systemFire reportedODI 11764359

Engine

19 reports1 fire
“The contact owns a 2015 Hyundai Sonata. The contact stated that while driving approximately 65 MPH, the vehicle failed to properly accelerate. Later, while attempting to accelerate from a yield sign, the vehicle suddenly stalled. The vehicle was later towed to the local dealer to be diagnosed, and it was determined that the engine bearings had failed and the engine needed to be replaced. The manufacturer was notified of the failure. The failure mileage was 97,000.”
Owner complaint to NHTSAFiled Sep 21, 2026EngineODI 11765767

Service brakes

8 reports1 crash
“We pulled up at Hillgreen circle Cockysville MD To drop my boyfriend off at his apartment. I went to pull in the parking spot.I went to put the car into park and it had no brakes. I was slamming them and pumping them. It excellerated and took off. Jumped the curb,went down the hill and into the apartment building. A red light had came on the dash, right before it took off. Seemed like it was changing to gas or the electric mode,or the other way around. The airbag on the passenger side came out deflated,and filled with smoke going into the car. He was the belted front passenger and his elbow went in to the front window. You can tell by looking at it,the hole and spidered around it. He broke his right elbow. It is available anytime at the moment. It's at Hyundaii in Glen burnie. I need to get it to state farms lot,to get the Kelly blue book value. We look forward to hearing from you”
Owner complaint to NHTSAFiled Feb 12, 2026Electrical system, Air bags, Service brakesCrash reportedODI 11717654

Power train

7 reports1 crash
“The contact owns a 2015 Hyundai Sonata Hybrid. The contact stated that while driving at an undisclosed speed, the message "Turn off the Engine Immediately" was displayed. Several unknown warning lights were illuminated. The vehicle was taken to the dealer, who was unable to duplicate the failure. The vehicle was not repaired. Later, the contact stated that while driving at an undisclosed speed, the vehicle inadvertently lost motive power. The contact was able to pull to the shoulder of the roadway, where the vehicle failed to restart with several unknown warning lights illuminated. The vehicle was towed back to the dealer, who then diagnosed failures with the ABS and transmission. The vehicle was repaired, but the failure reoccurred. The manufacturer was notified of the failure but provided no assistance. The failure mileage was unknown.”
Owner complaint to NHTSAFiled Apr 16, 2024Service brakes, air, Power trainODI 11583377

Service brakes, hydraulic

5 reports1 fire1 related recall
“The contact owns a 2015 Hyundai Sonata Hybrid. The contact stated that while driving 5 MPH and making a left turn, the vehicle made an abnormal knocking sound. The contact stated that upon pulling into an apartment complex parking lot, the contact noticed that there was smoke coming out from underneath the hood. There was no warning light illuminated. The contact immediately parked and exited the vehicle. The contact stated that upon opening the hood, the contact noticed a small fire and was able to extinguish the fire with a water bottle. The contact was able to push the vehicle into a parking space with the assistance of her son. There was no injury sustained. No police report was filed. The vehicle was towed to an independent mechanic, where it was diagnosed that a fluid leak from an unknown hose had caused the fire, and there was a hole in the engine block. The contact also stated that there was a puddle of fluid on the ground. The vehicle was not repaired. The contact became aware that the VIN was included in NHTSA Campaign Number: 23V651000(Service Brakes, Hydraulic), which the contact related to the failure. The dealer and the manufacturer were not…”
Owner complaint to NHTSAFiled Apr 10, 2025Service brakes, hydraulic, Engine and engine coolingFire reportedODI 11653864

Vehicle speed control

4 reports1 crash
“TL* THE CONTACT OWNS A 2015 HYUNDAI SONATA HYBRID. WHILE DRIVING VARIOUS SPEEDS AND ATTEMPTING TO BRAKE, THE VEHICLE ACCELERATED. THE CONTACT DEPRESSED THE BRAKE PEDAL MULTIPLE TIMES AND WAS ABLE TO STOP THE VEHICLE. THERE WAS NO WARNING INDICATOR ILLUMINATED. IN ADDITION, THE VEHICLE INTERMITTENTLY FAILED TO ACCELERATE WHEN THE ACCELERATOR PEDAL WAS DEPRESSED. THE FAILURES RECURRED SEVERAL TIMES. THE VEHICLE WAS TAKEN TO JIM CLICK MAZDA AUTO MALL (877-888-2760, LOCATED AT 700 W AUTO MALL DR, TUCSON, AZ 85705), BUT THE FAILURES COULD NOT BE DIAGNOSED OR DUPLICATED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURES. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS NOT PROVIDED.”
Owner complaint to NHTSAFiled Jul 3, 2019Power train, Vehicle speed control, Service brakesODI 11229352
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 28, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.