2017 Genesis G80

This vehicle experienced an engine overheating failure while driving, five days after a cooling-system repair (radiator hoses, valve cover gaskets, spark plugs) had been completed at the dealership. The dashboard displayed an explicit "Engine has overheated" warning, and the vehicle could not continue to be driven. The vehicle was returned to the dealership. Per their own written statement, there were "no signs of engine damage related to the overheating concern" at that time. The vehicle's own mileage record shows it did not leave the dealership's lot for nearly a month afterward, despite a written claim that the shop foreman had personally test driven it before release. After that release, a fractured metal bracket was found in the engine compartment near the serpentine belt, along with multiple additional loose, missing, or unseated fasteners throughout the engine bay. The dealership's technician stated he had no reason to have inspected that area. The cause of the fracture and the discrepancy with the technician's account have not been resolved. Separately, the vehicle's Lane Keeping Assistance/Lane Departure Warning system has been non-functional, was twice described by the dealership's technician as "working," and both times disproven by independent testing showing the system displaying "system off." The vehicle has also been producing smoke while driving and idling, consistent with a fluid leak burning off a hot engine component, accompanied by a worsening chemical/exhaust-like odor in the cabin, not yet diagnosed. This is reported given the overheating history, the undiagnosed cabin odor with possible carbon monoxide exposure risk, and engine-bay damage discovered following dealership service, in case relevant to safety monitoring of this repair pattern.

My 2017 Genesis G80 3.8L, VIN [XXX], has approximately 43,840 miles and intermittently slips or shifts improperly between approximately third and fifth gears while driving and causes harsh jolts forward. Jenkins Genesis confirmed the condition, stated that the transmission was slipping from the 3–5 clutch area, and recommended complete transmission replacement. The malfunction is unpredictable and creates a risk of sudden loss or interruption of propulsion while merging, crossing an intersection, changing lanes or driving at highway speed. A driver may press the accelerator but not receive the expected forward power. A [XXX] infant is regularly transported in the vehicle. The vehicle also has a faulty right-front ABS wheel-speed sensor, a passenger seat-belt safety-system communication fault, and intermittent electrical or sensor warnings. Genesis TSB 21-AT-010HG-1 applies specifically to the 2017 G80 and addresses shift flare or harsh shifting during the 2–3, 3–4 and 4–5 shifts. It requires transmission-solenoid, wiring-harness and fluid inspection procedures. TSB 19-AT-014HG also addresses harsh or delayed shifting in 2017–2018 G80 vehicles and provides electronic shift-data testing. The written repair estimate does not establish whether all applicable TSB diagnostic procedures were completed. The model also has electrical recall history, including NHTSA recalls 24V-107 and 21V-161. I am not claiming the recalls caused the transmission failure, but the concurrent transmission, ABS, seat-belt and electrical faults warrant investigation. I request that NHTSA examine similar G80 complaints involving slipping, shift flare, delayed shifting and loss of propulsion. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

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.

The contact owns a 2017 Genesis G80. The contact stated occasionally while shifting into gear, the vehicle jolted, with an abnormal sound coming from underneath the hood. There was no warning light illuminated. The local dealer was contacted, but the vehicle was not diagnosed or repaired because the warranty had expired. The manufacturer was not made aware of the failure. The failure mileage was approximately 40,000.

Approximately May or June of 2022 I noticed my 2017 Genesis g80 began intermittently hesitating and hard shifting when I was driving so being that I hadn't had it even a year I contacted the dealer and Genesis. I was told the warranty was up with Genesis and advised to contact the extended warranty by Carvana (the dealer). I did, but when they didn't have any shops in network who felt comfortable working on my vehicle and a recall came up with the vehicle I contacted Genesis again and was sent to an authorized dealer who fixed the recall and also agreed to check my transmission fluid to make sure it wasn't the issue causing the hard shifting. Now, the problem is back and on Genesis owner forum it shows it's actually a known problem that they issued a TSB about as of September 2021 and my vehicle falls in the effected vehicles, but I wasn't made aware of this and they only want to honor repair if vehicle is still under warranty not as a recall which is insane since it's a safety hazard. The hesitation can make someone run into the back of you or your car hesitate to accelerate and they've since upgraded to using a different type in their cars due to the issue. So, if they are going to allow them to be sold and resold either Genesis or the dealers need to be responsible for making sure they are safe and the defective parts are repaired before selling the car.

TL* THE CONTACT OWNS A 2017 GENESIS G80. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE VEHICLE JERKED AND VIBRATED ABNORMALLY WHILE CHANGING GEARS. THE VEHICLE WAS TAKEN TO WEBB HYUNDAI LOCATED AT 1000 WEST 81ST AVE MERRILLVILLE IN 46410, AND DIAGNOSED WITH A DEFECTIVE TRANSMISSION. THE CONTACT WAS INFORMED THAT THE TRANSMISSION NEEDED TO BE REPAIRED OR REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 23,000.

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.

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.