Description of Incident: The vehicle is experiencing significant engine oil dilution by gasoline. Upon inspection of the dipstick, the oil level is consistently found to be well above the "Full" mark, and the oil emits a strong, pungent odor of raw fuel. This indicates that unburnt gasoline is bypassing the piston rings and entering the crankcase during normal operation, particularly in colder temperatures or during hybrid engine cycling. Safety Risk: The dilution of engine oil with fuel significantly reduces the oil's viscosity and lubricating properties. This creates a high risk of premature engine wear, rod bearing failure, and sudden engine seizure or stalling while the vehicle is in motion. A sudden loss of motive power at highway speeds poses a severe crash hazard to myself and other motorists. Attempts to Correct: I have noted that similar Hyundai models using the 1.6L platform (such as the Tucson Hybrid via TSB 23-EE-002H) have received software updates to address this specific issue. However, when contacting the dealer regarding my Elantra Hybrid, I was informed that no such software fix or service campaign currently exists for the CN7 Elantra model, leaving the safety defect unaddressed. Expected Resolution: Hyundai should be required to issue a recall or technical service bulletin for the Elantra Hybrid to update the Engine Control Unit (ECU) logic, ensuring the engine reaches and maintains temperatures necessary to prevent fuel accumulation in the oil.
- NHTSA ID
- 11735854
- Incident
- Jan 7, 2026
The contact owns a 2022 Hyundai Elantra. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. Additionally, there was an abnormally strong gasoline odor coming from the vehicle. The vehicle was taken to an independent mechanic; however, the vehicle was not formally diagnosed. The contact was informed that there was a crack in the engine, causing a leak. The vehicle was then taken to the dealer, but it was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 23,825.
- NHTSA ID
- 11730787
- Incident
- Apr 13, 2026
- Mileage
- 23,825 mi
The contact owned a 2022 Hyundai Elantra. The contact stated while the vehicle was parked, the contact stated that a relative had entered the residence and informed the contact that the vehicle was on fire. The vehicle was unoccupied. The contact stated that no warning lights were illuminated prior to the failure. The fire department arrived and extinguished the fire. A fire report was filed. In addition, the contact stated that the vehicle was parked five minutes prior to the failure. The vehicle was towed to a local tow yard. The manufacturer was made aware of the failure, and a case was filed. The contact was advised to have the vehicle towed to the dealer for inspection. The failure mileage was approximately 40,000.
- NHTSA ID
- 11721407
- Incident
- Feb 1, 2026
- Mileage
- 40,000 mi
ElectricalEngineFuel system
Filed Jan 17, 2026
Vehicle: 2022 Hyundai N Line Mileage at Initial Incident: ~17,000 miles Components Involved: Engine and Engine Cooling; Exhaust System / Emissions; Air Bags (SRS) I am submitting this complaint to document unresolved emissions system and Supplemental Restraint System (SRS) safety concerns involving my 2022 Hyundai N Line, as well as the manufacturer’s refusal to ensure proper diagnosis and corrective action following a documented dealer service error and subsequent warranty repair. At approximately 17,000 miles, a Hyundai-authorized dealership failed to reinstall an engine oil seal during a routine oil change. This error caused rapid engine oil loss at highway speed, activation of the oil warning system, and oil discharge onto the roadway. The incident is documented in Hyundai service records and is not disputed. Sudden oil-loss events of this nature are known to cause latent or progressive damage to internal engine components and federally regulated emissions systems, even when immediate engine failure does not occur. Despite proper maintenance after this incident, the vehicle subsequently set DTC P0420 (Catalyst System Efficiency Below Threshold – Bank 1) at a mileage far below expected durability. Hyundai replaced the catalytic converter under warranty. I requested diagnostic data, inspection findings, and documentation supporting the repair, but the dealership refused to provide anything beyond a basic repair invoice. Immediately following this Hyundai-authorized warranty repair, the vehicle developed a new drivability defect, specifically hesitation during acceleration, which was not present prior to the catalytic converter replacement. This indicates a post-repair nonconformity and raises concern that emissions-related components may not have been fully repaired or that additional systems were affected during the warranty repair process. When I returned the vehicle for evaluation, the dealership stated that it would not diagnose the vehicle unless an acti
- NHTSA ID
- 11711686
- Incident
- Dec 29, 2025
The contact owns a 2022 Hyundai Elantra. The contact stated while her daughter was driving 63 MPH, several unknown warning lights illuminated, and the message that the vehicle was in neutral was displayed. The contact pulled over to the side of the road and waited for a tow truck to arrive on the scene. The contact stated that a Police Officer showed up on the scene because the vehicle was blocking the right side of the roadway. The vehicle was towed to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure but offered no assistance. The contact was referred to the NHTSA Hotline to report the failure. The approximate failure mileage was 34,000.
- NHTSA ID
- 11653542
- Incident
- Mar 23, 2025
- Mileage
- 34,000 mi
ElectricalEngine
Filed Mar 1, 2025
My car has 62,000 miles on it just about three weeks ago. The air conditioner evaporator went out now the car is making a bunch of noise and it’s blowing very hot air. Car should not be having this issue with less miles is this. I took it to the Dealership for a diagnostic check and they told me that this is a known problem with these cars I asked was there a recall on the part due to a failing with less miles, as such The mechanic told me I need to put in a complaint and maybe something will be done so I’m sitting with this car and I literally had to keep the windows down to stay cool
- NHTSA ID
- 11645709
- Incident
- Jan 10, 2025
At the beginning of December 2022 (a year after I purchased my brand new vehicle), two of the ignition coils misfired. I was driving down the highway and suddenly my car lost power and then cut off. I was able to start it again, but it would not drive faster than 25mph and would randomly lose power again. On December 7th, 2022 I took it to Hyundai and they were able to replace the two coil packs under the warranty. However, they didn't change the spark plugs (unbeknownst to me), a few months later I decided to change my spark plugs (which had to be purchased directly from Hyundai for $120), all of my spark plugs were completely burnt and looked terrible. There was a caution signal on my dash board and after running an OBD code scanner, one of the error codes that were triggered were "P030400".
- NHTSA ID
- 11632529
- Incident
- Dec 4, 2022
Our Jiffy Lube service center performed and oil change to Hyundai Elantra. A day later customer came back with vehicle being towed. Customer stated vehicle seized for no reason. Our technicians inspected vehicle engine oil and found it to be at proper level, but vehicle was completely dead as if no power at all. Customer towed vehicle to nearest dealership, dealership states vehicle seized due to oil starvation due to improper placement of oil filter. This is a canister filter. There is no right or wrong way to place a canister oil filter. Our service center is left with a $9855 bill. Would like to know if dealership statement is true(2022 Hyundai Elantra under warranty, but denied). Please read dealership statement on third page under description.
- NHTSA ID
- 11517706
- Incident
- Jan 24, 2023
The contact owns a 2022 Hyundai Elantra. The contact stated that while driving at 40 MPH, the vehicle shuddered. Additionally, while shifting between gears from park(P) to drive(D) the vehicle made an abnormal sound. The vehicle was taken to the dealer several times; however, the dealer was unable to duplicate the failure. The manufacturer was made aware of the failure. The failure mileage was approximately 250.
- NHTSA ID
- 11514218
- Incident
- Apr 1, 2021
- Mileage
- 250 mi
My check engine light came on before the car reached 700 miles on it. The car acts like it does not want to accelerate, but the RPMS go up- I have cruised at 60mph (and at 35) and tried to move over to a different lane to avoid upcoming vehicles and the car won’t accelerate. Merging onto the freeway, again I’m gaining speed, and then the car quits accelerating. I have had the accelerator all the way down to the floor and still no power. Periodically the check engine light will shut off. I have had the check engine looked at with the reader and the code that comes on is P2261 Turbo/super charge
- NHTSA ID
- 11442505
- Incident
- Sep 28, 2021
Higher-selling and older vehicles accumulate more reports. Counts are not failure rates and are not directly comparable between vehicles that sold in very different numbers.