2021 Genesis G80
Vehicle Specs & Maintenance Data
The 2021 Genesis G80 maintenance specs on this page cover the key fluids, torque values, and wear items you need for routine service. Use these numbers as a quick reference when performing oil changes, tire rotations, brake jobs, and other scheduled maintenance on your Genesis G80.
For oil changes, the 2021 Genesis G80 takes 0W-20 Full Synthetic motor oil with a capacity of 6.7 quarts. Brake fluid type is DOT 3, the recommended coolant is Phosphate-based Green/Blue, and transmission fluid is SP-IV-M (ATF). Always use the manufacturer-recommended fluids to maintain warranty coverage and engine longevity.
When mounting wheels on the Genesis G80, torque the lug nuts to 101-116 ft-lbs using a calibrated torque wrench. Over- or under-torquing can lead to warped brake rotors or loose wheels. Re-torque after 50 to 100 miles on newly installed wheels.
Owners of the 2021 Genesis G80 have reported 5 common issues including "Fuel Pump Module Defect (Recall)", "Air Suspension Self-Leveling Failure (E-LSD Equipped)" and "Heads-Up Display Flickering and Dimming". Scroll down to the Diagnostics tab for detailed descriptions, solutions, and estimated repair costs.
There are 3 NHTSA safety recalls on file for the 2021 Genesis G80. Check the Recalls tab below for full details.
Specifications on this page are compiled from multiple publicly available sources including manufacturer documentation, NHTSA data, and automotive databases. Always cross-reference with your owner's manual or official factory documentation before purchasing parts or performing any service.
The 2021 Genesis G80 uses 0W-20 Full Synthetic motor oil (6.7 qt capacity), requires lug nuts torqued to 101-116 ft-lbs, takes DOT 3 brake fluid.
Manufacturer-recommended maintenance schedule for the 2021 Genesis G80. Always verify intervals against your owner's manual.
Enter a diagnostic trouble code to see causes, symptoms, and fixes for the 2021 Genesis G80.
Common problems reported by 2021 Genesis G80 owners, with recommended fixes and estimated repair costs.
Fuel Pump Module Defect (Recall)
The fuel pump module may fail due to a manufacturing defect in the fuel pump impeller, causing the engine to stall without warning during driving or fail to start. This is a safety-critical issue as it can occur at any speed. NHTSA recall 22V-178 covers the affected G80 models.
Genesis dealers will inspect and replace the fuel pump module assembly free of charge. Owners should check their VIN on the NHTSA recall lookup page or contact Genesis customer care to determine if their vehicle is affected.
Est. Cost: $0 (recall)Air Suspension Self-Leveling Failure (E-LSD Equipped)
G80 models equipped with the available electronically controlled suspension experience a failure of the self-leveling function. The vehicle may sit lower on one corner or display a 'Suspension Service Required' warning. The issue is traced to leaking air springs or a failing air compressor.
Diagnose which component has failed using the Genesis diagnostic system. Replace the affected air spring, compressor, or ride height sensor. All four corners should be recalibrated after any suspension component replacement.
Est. Cost: $800 - $2,000 per air spring / $1,200 - $2,500 (compressor)Heads-Up Display Flickering and Dimming
The heads-up display (HUD) flickers intermittently, dims excessively in bright sunlight, or fails to project a visible image. Some owners report the HUD image appears washed out or develops a green tint. Temperature extremes seem to worsen the flickering behavior.
Recalibrate the HUD through the infotainment settings. If recalibration does not resolve the issue, the HUD projector unit under the dashboard requires replacement. Ensure the windshield film layer is intact, as damaged windshield film can affect HUD clarity.
Est. Cost: $0 (recalibration) / $1,000 - $2,500 (HUD unit replacement)Automatic Trunk Lid Slow Operation
The power trunk lid operates very slowly compared to when the vehicle was new, taking 8-10 seconds to fully open or close. In some cases, the trunk stops mid-travel and reverses direction as if detecting an obstruction when there is none. The issue worsens in cold weather.
Lubricate the trunk lid hinges and strut cylinders. Recalibrate the power trunk through the Genesis diagnostic tool. If the electric strut actuators have weakened, they require replacement. The trunk latch sensor should also be inspected for false obstruction detection.
Est. Cost: $50 - $150 (lubrication/recalibration) / $400 - $900 (actuator replacement)Lane Keep Assist Aggressive Steering Intervention
The lane keeping assist system applies overly aggressive steering corrections, especially on curved roads and near construction zones with temporary lane markings. Owners describe the steering wheel pulling sharply, which feels unsafe. The system also tends to fight the driver's inputs when changing lanes without a turn signal.
A software update for the forward camera and ADAS control module adjusts the steering intervention sensitivity. Lane keep assist sensitivity can be adjusted in the vehicle settings. Genesis released an ADAS software update for improved lane detection on the G80 platform.
Est. Cost: $0 (software update under warranty)3 NHTSA safety recalls for the 2021 Genesis G80. Check your VIN at NHTSA.gov
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
Hyundai Motor America (Hyundai) is recalling certain 2021-2022 Genesis G80, GV80, and 2022 Genesis GV70 vehicles. The fuel pump may fail, which can result in a loss of drive power.
A loss of drive power can increase the risk of a crash.
Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed November 8, 2023. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 016G.
SEAT BELTS:FRONT
Hyundai Motor America (Hyundai) is recalling certain 2020-2023 Genesis GV80, 2021-2023 Genesis G80, 2022-2023 Genesis GV70, and 2023 Genesis GV60 vehicles. In the event of a crash, the front driver-side and/or passenger-side seat belt pretensioners may explode upon deployment.
An exploding seat belt pretensioner can project metal fragments into the vehicle, strike vehicle occupants, and result in injury.
Dealers will secure the seat belt pretensioners with a cap, free of charge. Owner notification letters were mailed April 14, 2023. For GV60 owners, Interim notification letters, notifying owners of the safety risk, were mailed April 14, 2023. A second notice will be sent once the final remedy is available. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 012G. This recall supersedes and expands recall number 21V-796. Vehicles previously repaired under recall 21V-796 will need to have the new remedy completed.
FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
Hyundai Motor America (Hyundai) is recalling certain 2021 Genesis G80 and GV80 vehicles equipped with 2.5-litre turbo engines. The fuel tube connecting the high pressure fuel pump to the fuel rail may not seal properly, which could allow fuel to leak.
A fuel leak in the presence of an ignition source can increase the risk of a fire.
Hyundai will notify owners, and dealers will replace the high pressure fuel tube, free of charge. Owner notification letters were mailed on May 24, 2021. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 008G.