2017 Genesis G80 Complaints

STEERING,ELECTRICAL SYSTEM,ENGINE — Filed 04/01/2026

WHEN YOU PRESS ON THE GAS ACCELERATOR- THE CAR ONLY MOVES AT A FEW MILES PER HOUR. THIS IS INTERMITTENT BUT MAKES THE CAR UNDRIVEABLE AND VERY DANGEROUS TO DRIVE IN TRAFFIC. THE THROTTLE BODY WAS REPLACED BUT NOW GENEIS SAYS IT IS ANOTHER ELECTRICAL ISSUE AND THE CAR NEEDS A NEW HARNESS- BUT GENSIS NO LONGER MAKES THIS PART (THE HARNESS) SO GENESIS EVEN UNDER MY WARRANTY CANNOT FIX THE CAR GENESIS SAYS IT IS A HARNESS ISSUE AND THEY DON'T HAVE AND CANNOT GET THE PART- HENCE THEY CANNOT FIX THE CAR

ENGINE — Filed 03/07/2025

My oil light kept flashing on while driving until I come to complete stop. Had to take it to Genesis dealership in [XXX] Ms. They did a check on my vehicle and found the problem. I had to pay to replace these issues the sender assy-oil pressure & the harness-op sensor. The total bill was $1,012.14. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

UNKNOWN OR OTHER — Filed 12/13/2025

Oil tank sensor

ENGINE — Filed 12/01/2025

Oil pressure light started to come on at idle, goes away while driving.. heard this has been and issue and even the dealership knows about it.. there is also a recall in Korea for the same exact thing for the same exact cars but no recall in the usa..please make this a recall it is not safe nor should this be over looked

ENGINE — Filed 09/03/2025

While driving the engine simply stops and won't restart. When this happens, the key fob won't lock the car or unlock the trunk. The trunk opening button won't open the trunk. It just flashes the parking light and gives a sound.

ENGINE — Filed 01/06/2025

At 63,230 miles the engine oil pressure light would illuminate on my 2017 Genesis G80. I took it to the dealer and the technician found the oil pressure switch on my car went bad and in the words of the mechanic was leaking internally. This is a known issue by Genesis/Hyundai as they are performing repairs in Korea (where this vehicle is built and assembled) for this very problem. But in America they are refusing to honor the warranty which under powertrain is valid for 10 years/100,000 miles. Proper function of the engine is clearly a part of the powertrain. The warranty further goes on to state that under engine, "gaskets and seals" are covered. The repairs I had to have performed at great expense for a failed oil pressure switch seemed clear to me under the warranty. Not only a known issue and covered where the car is made, but they seem to know they have a huge issue based on Genesis Forums and their complaints the numbers are large; they don't want to have to make it right for the owners.

UNKNOWN OR OTHER — Filed 01/14/2025

The cars engine shut down while driving. Once we got it stopped we put it in park and the car started and we drove it 30 minutes home.

UNKNOWN OR OTHER — Filed 01/02/2025

Subject: Safety Concern Regarding 2017 Genesis G80 Dear NHTSA, I am writing to report an ongoing issue with my 2017 Genesis G80. While driving, I have experienced a significant safety concern related to the vehicle's acceleration. Specifically, when accelerating at various speeds, the vehicle begins to jerk abruptly and violently, causing a potentially dangerous situation on the road. After seeking advice, I was informed that the problem might be related to the engine malfunctioning or failing. I am deeply concerned about the safety risks this poses, both for myself and others on the road. I would greatly appreciate any guidance or investigation into this matter to ensure the issue is addressed promptly. Thank you for your attention to this serious safety concern. Sincerely,
 [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

POWER TRAIN — Filed 10/15/2024

The contact owns a 2017 Genesis G80. The contact stated while driving at various speeds, the vehicle lost power for approximately 2-3 seconds. The contact stated that there was a loud thump when the transmission shifted gear. The vehicle was taken a dealer to be diagnosed. The contact was informed that the transmission was shifting rough between 2nd to 3rd gear and 4th to 5th gear. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 60,000.

ENGINE — Filed 12/11/2024

The hyundai genesis and the genesis G80 have an oil pressure sensor defect. Practically, everyone i know with a genesis, in particular the 3.8 L engine, has this issue. The oil pressure sensor illuminates even though the engine oil level is fine and this issue can occur at any time regardless of mileage. I'd be surprised if this issue has not been reported to you all.