2012 Hyundai Elantra engine problems

Filed Aug 20, 2026 · Engine · 151,000 miles · OK

The contact owns a 2012 Hyundai Elantra. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power and stalled. The check engine warning light illuminated after the failure. The vehicle was taken to an independent mechanic, where the vehicle was diagnosed with a failed crankshaft sensor. The vehicle was repaired; however, the failure reoccurred. The vehicle was taken back to the independent mechanic, and the contact was advised to take the vehicle to the dealer. The contact was informed of an unknown recall; however, the VIN was not associated with a recall associated with the failure. The dealer was made aware of the failure. The contact was informed that the repair was not covered under warranty because the mileage was 3,000 miles over the mileage limitation. The vehicle was scheduled for a diagnostic test with the dealer. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 151,000.

Filed Apr 27, 2026 · Engine · FL · fire

The contact owned a 2012 Hyundai Elantra. The contact stated that around 4:00 o'clock in the morning, she was awoken by the sound of her dogs barking; she then discovered that her vehicle had caught fire and had burned to the ground. The fire spread, which caught fire to a nearby mobile home and a 4-wheeler. The authorities were called to the scene, and the fire department managed to extinguish all three fires. No injuries were reported, and a police report was not filed. A neighbor's Ring doorbell camera captured the footage of the fire, which showed that the fire had started from underneath the hood of the vehicle. The manufacturer was notified of the failure, and a case was filed. The vehicle was a total loss and remained in the contact's possession. The failure mileage was unknown.

Filed Apr 6, 2026 · Engine · 80,000 miles · PA · fire

The contact’s son owns a 2012 Hyundai Elantra. The contact stated that while the contact’s son was driving at an undisclosed speed, the vehicle unexpectedly stalled, and the rear of the vehicle caught fire. The contact’s son pulled the vehicle over to the side of the road, and the fire extinguished on its own. No fire or police report was filed. The contact was informed by local police that a trail of oil had leaked from the contact’s son’s vehicle while driving. The vehicle was towed to the dealer. The vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure and refused to replace the engine under an unknown related engine recall. The approximate failure mileage was 80,000.

Filed Feb 27, 2026 · Engine · OH

To Whom It May Concern, I am submitting this complaint regarding a 2012 Hyundai Elantra equipped with the 1.8L Nu engine, which is experiencing premature internal engine damage that presents a potential safety risk. Vehicle details: Year/Make/Model: 2012 Hyundai Elantra Mileage: Approximately 134,500 miles Issue description: The engine produces a persistent ticking/knocking noise, most pronounced at cold start but now continuing even after the engine has warmed. A Hyundai dealership diagnosed the vehicle with piston slap and confirmed significant scarring on the cylinder walls, stating that the only repair is full engine replacement. Despite the presence of internal engine damage, no warning lights are illuminated. I am concerned this condition could lead to sudden engine seizure or loss of power while driving, creating a safety hazard. Additional observations include: Excessive crankcase blow-by observed when removing the oil fill cap while the engine is running Strong exhaust fumes at cold start Noise most noticeable at idle and low RPM Regular oil changes using manufacturer-recommended oil viscosity The dealership advised the condition was not repairable short of engine replacement and did not submit the concern for Hyundai corporate technical review (Techline), despite the known history of engine defects in Hyundai Nu engines. I am filing this complaint to document a pattern of premature internal engine wear that may not be adequately addressed through recalls or warranty programs, and which could result in sudden engine failure. Thank you for your attention to this matter.

Filed Feb 12, 2026 · Engine · NJ

Car check engine light illuminated and car began shaking and stalled at 79284 miles. Local mechanic said engine was dry and would need full replacement, no dashboard lights indicating oil level or engine issues prior to this point.

Filed Nov 21, 2025 · Engine · PA

We went to a dealership to get it inspected due to a knocking noise in the engine. They used a tool and said it was most likely cylinder 3 piston slap. There was an issue with this according to Hyundai in the past. This puts my wife at risk because if it ends up blowing up, it could send shrapnel through the motor or cause her to wreck her vehicle if it happens while driving. This was diagnosed by a local dealership. No engine light is on at the time. This started a few weeks ago. The car is around 132,000 miles. Thank you!

Filed Oct 30, 2024 · Electrical, Engine · NY

I went to start my car and it would not turn over. All the lights were on, the vehicle wouldn't move out of park, and the security system kept going off. The last time this happened I had the starter replaced and the neutral safety switch and it was fine for a bit but now it's happened again. This is at least the 3rd time I've had this issue. Please help! I know I'm not the only one. I had to have AAA come and pick my car up and bring it to a garage.

Filed Jun 25, 2024 · Engine · FL

I was driving my 2012 Hyundai Elantra and it suddenly stopped. I took it to be checked out and it has an excessive oil consumption issue which can cause engine failure or a fire. Hyundai refuses to acknowledge the issue or fix it. After doing some research I see that this is a common problem with this car. I have to check my oil every 1000 miles and many times less than that and refill it. They should be held responsible and fix the issue. There should also have been a recall considering not only how dangerous this is, but also how many people are experiencing this.

Filed Jun 21, 2024 · Brakes, Engine · VA

The contact owns a 2012 Hyundai Elantra. The contact stated that the vehicle was not starting properly with the check engine warning light illuminated. The contact received notification of the federal safety agency Campaign Number: 23V651000 (Service Brakes Hydraulic) however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. Parts distribution disconnect.

Filed May 16, 2024 · Brakes, Engine · MA

Since day 1. Brakes have failed. First recall took years. They “updated my software “ brakes still failed. They failed to believe me “Couldn’t find a problem “ there’s no warning lights no nothing. Out of nowhere. The Brake goes to the floor. Makes a grinding sound and your either going towards on coming traffic or a ditch. Brakes failed at numerous intersections. How I’m alive is beyond me. The best part, either the seat belt is too baggy or strangles you there’s no in between. My entire steering system is junk. wasted money on tires alignments brake pads brake censors. Dealership has another recall on these brakes with no remedy. I’ve sadly driven this car over 10 years with failing brakes. I drive with my right hand on the e brake ready to yank it at any given times. I’m honestly traumatized by this car. Engine and transmission are junk. Nightmare