2017 Genesis G90 Engine Problems

See attached document for complaint.

NHTSA ID

11740637

Incident

Apr 20, 2026

* Recall Campaign Number : [018G, 019G] I. Statement of Complaint This complaint concerns a failure in a critical safety-related component that was previously addressed under a mandatory manufacturer recall, and the subsequent refusal by the authorized dealership to provide a second no-charge repair for the same repeated failure. II. Chronology of Events * Original Recall Repair: Approximately thirteen (13) months ago, 8/30/2024 the vehicle was taken to Anaheim Hyundai to address a safety recall concerning the oil feed pipe. The prescribed remedy, a replacement of the oil feed pipe, was completed at no cost under the recall campaign. * Second Failure (Current Event): On or about 10/6/2025, while the vehicle’s engine was running, I observed smoke rising from the engine compartment. The vehicle was immediately taken to a local independent mechanic who diagnosed the issue as a burst oil feed pipe—the identical component subject to the prior recall. * Attempted Repair at Anaheim Hyundai (Denial): The vehicle was then towed back to Anaheim Hyundai. The service department acknowledged that the component failure was the same issue addressed in the previous recall. However, the dealership has now refused to perform the repair under the recall process, citing a specific 12-month policy set by Hyundai Motor America regarding the warranty on recall remedies, which has now expired. III. Request for Intervention The failure of the previously installed recall remedy (the oil feed pipe) exposes the vehicle to the original safety risk, including potential engine failure and fire hazards, and the manufacturer’s refusal to re-remedy the defect effectively negates the purpose of the mandatory recall. I request that NHTSA investigate this matter and compel Hyundai Motor America to: * Honor the original safety recall and provide a permanent, effective remedy at no charge to the consumer. * Clarify the consumer's right regarding the warranty on recall remedies, fails after install

NHTSA ID

11691980

Incident

Oct 6, 2025

The contact owns a 2017 Genesis G90. The contact stated that while driving at 50 MPH, the check engine warning light illuminated. The driver immediately pulled over. The vehicle was towed to the local dealer, where it was diagnosed, and it was determined that four crankshaft position sensors and the valve cover gasket needed to be replaced. The vehicle was repaired, but the failure recurred. The contact called the local dealer and was informed that the failure might be related to the timing chain. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 100,000.

NHTSA ID

11682174

Incident

Jul 17, 2025

Mileage

100,000 mi

The check engine light keeps coming on. We had spark plugs changed and still keeps miss firing. We are unable to switch between drive modes smoothly. We have taken in for service numerous times.

NHTSA ID

11624649

Incident

Sep 10, 2024

See attached document for complaint.

NHTSA ID

11610455

Incident

Aug 1, 2024

The contact owns a 2017 Genesis G90. The contact stated that while the vehicle was parked and running, the vehicle was idling rough and shaking. The vehicle restarted; however, the shaking failure recurred. The vehicle was not repaired. The contact received notification of NHTSA Campaign Numbers: 24V107000 (Electrical System) and 24V191000 (Engine and Engine Cooling) however, the parts to do the recall repairs were not yet available. The local dealer was not contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. The failure mileage was unknown. VIN tool confirms parts not available.

NHTSA ID

11581734

Incident

Apr 8, 2021

The contact owns a 2017 Genesis G90. The contact stated that while driving at an undisclosed speed, there was smoke coming from underneath the hood. The oil warning light intermittently illuminated. The vehicle was taken to an independent mechanic, who determined that the engine was leaking oil and advised the contact to take the vehicle to the dealer. The vehicle was then taken to the dealer, where it was diagnosed that there was oil leaking from the turbo chargers and the engine block. The contact was not aware of what needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 82,000.

NHTSA ID

11559714

Incident

Nov 20, 2023

Mileage

82,000 mi

I have replaced my thermostat four times in the last 18 months and I had it towed to the dealership again this morning for the same overheating problems.

NHTSA ID

11548992

Incident

Oct 9, 2023