general problems of the 2015 Hyundai Sonata Hybrid

Ten problems related to engine and engine cooling have been reported for the 2015 Hyundai Sonata Hybrid. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2015 Hyundai Sonata Hybrid based on all problems reported for the 2015 Sonata Hybrid.

1 Engine And Engine Cooling problem

Failure Date: 04/07/2025

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 notified of the failure. The failure mileage was approximately 115,395.

2 Engine And Engine Cooling problem

Failure Date: 06/17/2022

The contact owns a 2015 Hyundai Sonata Hybrid. The contact stated while driving approximately 60 - 65 mph, the battery warning light illuminated. The charging system failure message was displayed. The vehicle was taken to the local dealer where it was diagnosed and determined that the system needed to be reprogramed. The vehicle was repaired; however, the failure persisted. While driving at an undisclosed speed, the check engine warning light illuminated, and the vehicle stalled. The vehicle was taken to an unknown local dealer, but the vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 75,000.

3 Engine And Engine Cooling problem

Failure Date: 05/06/2022

The contact owns a 2015 Hyundai Sonata Hybrid. The contact stated that the check engine warning light was illuminated. The vehicle was taken to an independent mechanic who replaced fuel cap and performed other tests on the engine. The check engine warning light disappeared however, two weeks later the warning light returned. The dealer was contacted and a message was left. The manufacturer was not contacted. The failure mileage was 134,298.

4 Engine And Engine Cooling problem

Failure Date: 09/21/2020

The contact owns a 2015 Hyundai Sonata Hybrid. The contact stated while driving 20 mph, the vehicle loss motive power and the check charging system warning light illuminated before the vehicle stalled. The contact was able to coast and move the vehicle to the side of the roadway and waited for several minutes and restarted the vehicle. The contact continued to drive to his destination. The failure recurred several times. The local dealer was contacted and informed of the failure. The contact was informed that since the vehicle was experiencing the failure intermittently, the vehicle could not be diagnosed until the failure occurred and the vehicle was taken in with while the failure was happening. The vehicle was not diagnosed nor repaired. The manufacturer was made aware of the failure. The failure mileage was 29,000.

5 Engine And Engine Cooling problem

Failure Date: 06/01/2020

The contact owns a 2015 Hyundai Sonata Hybrid. The contact stated while driving 45 mph, there was a message that the vehicle was not safe to drive displayed on the instrument panel. The check engine warning light was illuminated. The contact stated that the vehicle began to stall; however, while depressing the accelerator pedal, the vehicle failed to accelerate. The vehicle was not drivable. The contact towed the vehicle to the local dealer, where it was diagnosed with needing both batteries to be replaced. The vehicle was repaired but continued to experience the failure. The contact took the vehicle to a second local dealer: interstate Hyundai (609 constitution dr, west monroe, la 71292, (318) 387-2667) where it was diagnosed with needing both manufacturer communications 964 & 966 to be completed. The dealer completed manufacturer repairs, but the vehicle continued to experience the failure. The manufacturer had not been informed of the failure. The failure mileage was approximately 95,000.

6 Engine And Engine Cooling problem

Failure Date: 06/01/2020

The contact owns a 2015 Hyundai Sonata Hybrid. The contact stated that while driving at various speeds, with the air conditioner activated and making a turn, the vehicle hesitated and loss power. There was no warning light illuminated. The contact called headquarter Hyundai (985 rinehart rd, sanford, FL 32771, (407)292-0000) however, the vehicle was not diagnosed nor repaired. The manufacturer was notified of the failure. The failure mileage was approximately 110,000.

7 Engine And Engine Cooling problem

Failure Date: 05/17/2018

Tl- the contact owns a 2015 Hyundai Sonata Hybrid. The contact stated that while driving at 65 mph, the sound of a loud pop was coming from underneath the vehicle front passenger side. The contact noticed smoke start emitted from the front passenger side floor panel. There was no warning light illuminated. The contact coasted to the side of the road and was able to exit the vehicle where he noticed flame was coming from underneath the center of the vehicle and then it burst into flame. The fire department extinguish the fire. The fire department filed a report. The vehicle was towed to a tow lot. The vehicle was not taken to a dealer or an independent mechanic for a diagnostic testing of the failure. The vehicle was not repaired. The manufacturer was notified of the failure but did not offer further assistance. The approximate failure mileage was 35,000. The VIN was not available. Aw.

8 Engine And Engine Cooling problem

Failure Date: 03/01/2016

Push botton start doesnt a lot of the time several times a wekk start the engine. Also, the suspension is terribly rough. You can feel every bump!.

9 Engine And Engine Cooling problem

Failure Date: 10/01/2015

When pressing the accelerate pedal there seems to be a delay in response. The delay can be as short as a few milliseconds to almost 3 entire seconds. This problem happens randomly, and makes my wife and I very nervous when trying to maneuver or proceed into traffic after being stopped.

10 Engine And Engine Cooling problem

Failure Date: 08/31/2015

On multiple occasions, the engine would not start (push button) .



Safety Ratings of Sonata Hybrid Cars
Fuel Economy of Sonata Hybrid Vehicles
Sonata Hybrid Service Bulletins
Sonata Hybrid Defect Investigations