2017 Genesis G80 Engine Problems

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

NHTSA ID

11744873

Incident

Apr 1, 2026

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)

NHTSA ID

11728481

Incident

Mar 7, 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

NHTSA ID

11703012

Incident

Dec 1, 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.

NHTSA ID

11687871

Incident

Sep 3, 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.

NHTSA ID

11651647

Incident

Jan 6, 2025

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.

NHTSA ID

11630128

Incident

Dec 11, 2024

I was made aware that my car has a recall. I took it to the dealership (World Car Kia Hyundai North, San Antonio, TX) to get fixed and they told me that there is no remedy for it. I stressed to them that I was worried about my car and that I have a child that is always in the car with me. They told me to keep looking on google and that google would tell me when there is a fix. I would like a different car or my money back but it seems like they will not do that for me.

NHTSA ID

11583934

Incident

Apr 12, 2024

The contact owns a 2017 Genesis G80. The contact stated that the vehicle shutoff while driving in the rain. There was an unknown warning light illuminated. The contact called the local dealer, but the vehicle was not diagnosed or repaired. The contact stated that the failure was related to NHTSA Campaign Number: 24V107000 (Electrical System). The manufacturer was not contacted. The failure mileage was approximately 78,000.

NHTSA ID

11580037

Incident

Dec 1, 2023

Mileage

78,000 mi

Oil light comes on intermittently due to faulty sensor. Apparently this is a recurring issue for this model.

NHTSA ID

11573721

Incident

Dec 1, 2023

oil Pressure sending unit I tried to get it fixed at a local shop but they refused because it was too tough a job for their skill level, I was confused about s until I saw a video showing the sensor being under the manifold and between cylinders and someone had broken their timing cover while replacing. Driving with the faulty sensor could lead to not knowing if an oil pump has failed causing engine failure upon driving. problem has been confirmed have not taken to dealer for inspection, mostly because I have not had the money to pay for the job started around 68k miles, oil light went on.

NHTSA ID

11520062

Incident

Oct 18, 2022

I am the original owner and when my vehicle reached approximately 65,000 miles just past the warranty the oil service light would come on sometimes then go out. i have had documented oil changes from my dealer approximately every 3500 miles. Everything seems to be normal in the car and the oil level checked on a regular basis is always ok. When the RPM rises above 2000 rpm the oil service light goes out and returns when the rpm is lower. After visiting a Genesis vehicle Forum web site which i subscribe to i discovered that it's a common problem many vehicles owners of the Genesis model particularly the G80. I am told that the remedy is costly due the need to remove the entire vehicle's intake manifold to get to the device and replace it which is causing the problem. This appears to be a factory device part failure as was explained to me and it may or may not fail within or after the warranty expires. Also whenever it rains my ABS warning light comes stating that the system is inoperable. Never comes on in dry weather.

NHTSA ID

11512063

Incident

Dec 15, 2022

Intermittent low oil pressure light (at low RPM) TSB issued for Korean customers, not for US Customers.

NHTSA ID

11511210

Incident

Mar 10, 2023

2017 GENESIS G80, ALL WHEEL DRIVE, 3.8 L ENGINE. CAR WAS BEING DRIVEN ON A 4 LANE EXPRESSWAY IN HEAVY, RUSH HOUR TRAFFIC USING ADVANCED CRUISE CONTROL SET NEAR SPEED LIMIT. G80 WAS IN THE LEFT LANE ATTEMPTING TO PASS A VEHICLE ON THE RIGHT. THERE WAS A VEHICLE AHEAD OF THE G80. DRIVER NOTICED ANOTHER VEHICLE COMING UP FAST FROM BEHIND UNTIL IT WAS VERY CLOSE TO THE REAR OF THE G80. WHEN DRIVER ATTEMPTED TO ACCELERATE AWAY FROM TAILGATING CAR, ENGINE REVVED, AND DID NOT ENGAGE. IT APPEARED DISCONNECTED FROM TRANSMISSION AS IF IN NEUTRAL. TACHOMETER NEEDLE SWUNG WILDLY. VEHICLE SLOWED SINCE IT WAS NOT ENGAGED, CREATING MORE RISK FROM TAILGATER. THE TACHOMETER BEHAVIOR AND GEAR NEUTRALITY PERSISTED FOR APPROXIMATELY FIVE SECONDS AND THEN ENGINE ENGAGED. TOOK CAR TO DEALER WHO WAS UNABLE TO REPLICATE BEHAVIOR OR DETECT SYSTEM ERRORS AFTER THREE DAYS OF WORK. DEALER REPORTED THAT MANUFACTURER'S ENGINEERS WERE UNABLE TO RECOMMEND ANYTHING. NO REPAIRS MADE.

NHTSA ID

11282092

Incident

Nov 10, 2019

Mileage

24,300 mi

WHILE DRIVING ON AN INCLINE TOWARD A STOP SIGN, THE VEHICLE TURNED OFF. WHILE MOVING FORWARD AS CARS PULLED OUT OF THE STOP SIGN THE CAR LURCHED (SIMILAR TO IF YOU WERE HIT FROM BEHIND) AND ALL SCREENS WENT DARK AND ALL ELECTRONICS WENT OFF. EVERYTHING CAME BACK ON WITHIN 1-2 SECONDS AND THE CAR PROCEEDED AS NORMAL.

NHTSA ID

11252875

Incident

Aug 28, 2019

THE CAR RANDOMLY DOES NOT TURN ON WHEN I PRESS THE START BUTTON. NOTHING HAPPENS. IT'S NOT THE KEY FOB EITHER BECAUSE ABSOLUTELY NOTHING WORKS IN THE CAR AT THAT POINT. I CAN'T OPEN THE TRUNK USING THE BUTTON INSIDE THE CAR, LOCK OR UNLOCK THE DOORS, NOTHING. THE CAR IS ESSENTIALLY A USELESS HUNK OF METAL. AFTER ABOUT 15-20 MINUTES THOUGH, THE CAR WILL JUST RANDOMLY TURN ON. I DON'T PRESS THE START BUTTON - IT'LL JUST TURN ON. THIS HAS HAPPENED ON 3 SEPARATE OCCASIONS SO FAR.

NHTSA ID

11252865

Incident

Aug 26, 2019

TL* THE CONTACT OWNS A 2017 GENESIS G80. WHILE DRIVING VARIOUS SPEEDS, THE VEHICLE HESITATED TO ACCELERATE. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE FAILURE OCCURRED INTERMITTENTLY. MERIDEN HYUNDAI (318 S BROAD ST, MERIDEN, CT 06450, (203) 235-1669) DIAGNOSED THE VEHICLE, BUT DID NOT FIND A FAILURE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 10,000.

NHTSA ID

11204018

Incident

Apr 1, 2019

Mileage

10,000 mi