2018 Genesis G90 Maintenance Schedule
Manufacturer-recommended service intervals and open recall alerts for your 2018 Genesis G90.
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4 Open Recalls
Source: NHTSAENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
Campaign #19V538000 · 19/07/2019
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
Campaign #19V538000 · 19/07/2019
Issue: Hyundai Motor America (Hyundai) is recalling certain 2018 Genesis G80 and 2017-2018 Genesis G90 vehicles equipped with 3.3 liter turbocharged engines. The turbocharger oil supply pipe may have a loose seal, causing oil to leak onto the exhaust manifold.
Risk: Oil leaking onto the exhaust manifold increases the risk of a fire.
Fix: Hyundai will notify owners, and dealers will replace the turbocharger oil supply pipe, free of charge. The recall began October 3, 2019. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 003G.
VISIBILITY:WINDSHIELD
Campaign #18V305000 · 10/05/2018
VISIBILITY:WINDSHIELD
Campaign #18V305000 · 10/05/2018
Issue: Hyundai Motor America (Hyundai) is recalling certain 2018 Hyundai Genesis G80 and Genesis G90 vehicles. The windshield and rear window on these vehicles may have been installed with incorrect primer, potentially reducing the glass bonding strength.
Risk: If the glass bonding strength is reduced over time, the windshield and rear window may detach while driving, increasing the risk of a crash.
Fix: Hyundai will notify owners, and dealers will replace the front and rear glass, free of charge. The recall began on July 6, 2018. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 001G.
ELECTRICAL SYSTEM:STARTER ASSEMBLY:SOLENOID
Campaign #24V107000 · 13/02/2024
ELECTRICAL SYSTEM:STARTER ASSEMBLY:SOLENOID
Campaign #24V107000 · 13/02/2024
Issue: Hyundai Motor America (Hyundai) is recalling certain 2015-2016 Genesis, 2017-2019 Genesis G80, Genesis G90, and 2019 Genesis G70 vehicles. Water may enter the starter solenoid and cause an electrical short, which can result in an engine compartment fire while parked or driving.
Risk: An engine compartment fire while parked or driving can increase the risk of injury.
Fix: Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will install a remedy relay kit in the engine junction box, free of charge. Owner notification letters were mailed July 15, 2024. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's numbers for this recall are 254(H) and 018G(G).
ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
Campaign #24V191000 · 08/03/2024
ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:TURBO/SUPERCHARGER
Campaign #24V191000 · 08/03/2024
Issue: Hyundai Motor America (Hyundai) is recalling certain 2018-2020 Genesis G80, 2017-2022 G90, and 2019-2022 G70 vehicles equipped with a 3.3-liter V6 turbocharged engine. The left turbocharger oil feed pipe may deteriorate and leak oil.
Risk: An oil leak in the presence of hot engine components can increase the risk of an engine compartment fire.
Fix: Dealers will replace the left turbocharger oil feed pipe, free of charge. Owner notification letters were mailed May 3, 2024. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 019G. This recall expands and replaces recall number 19V-538. Vehicles previously repaired under 19V-538 will need to have the new remedy completed.
Essential maintenance
Critical for safety and preventing major damage
Oil & Filter Change
Every 7,500 miReplace engine oil and oil filter. Modern synthetic oil lasts 7,500–10,000 miles.
Estimated cost — typical U.S. ranges
Dealer
~$120–$160
Shop
~$85–$115
DIY
~$25–$55
Full synthetic costs more than conventional. 5-quart 0W-20 + filter is the typical bill.
Tire Rotation
Every 7,500 miRotate tires to ensure even wear and extend tire life.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Often free at the shop where you bought the tires — worth asking before paying.
Brake Inspection
Every 15,000 miInspect brake pads, rotors, and fluid. Replace pads if worn below minimum thickness.
Estimated cost — typical U.S. ranges
Dealer
~$85
Shop
~$60
DIY
Free
Most shops do this free as a courtesy with any service. Don't pay separately if you can avoid it.
Timing Belt / Chain
Every 60,000 miReplace timing belt (if applicable). Critical failure can cause major engine damage.
Estimated cost — typical U.S. ranges
Dealer
~$935–$1175
Shop
~$655–$825
DIY
Pro only
On interference engines, a snapped belt destroys valves. Worth doing on schedule. Bundle water pump + tensioner — labor is already there.
Important maintenance
Keeps your vehicle running smoothly and efficiently
Engine Air Filter
Every 15,000 miReplace the engine air filter to maintain fuel efficiency and engine performance.
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
5-minute job on most cars; the airbox lid usually has clips, no tools needed.
Coolant Flush
Every 30,000 miFlush and replace engine coolant to prevent overheating and corrosion.
Estimated cost — typical U.S. ranges
Dealer
~$285–$330
Shop
~$200–$235
DIY
~$25–$60
Use the manufacturer-specified coolant — wrong color/chemistry can damage the cooling system.
Transmission Fluid
Every 30,000 miReplace transmission fluid to keep shifts smooth and prevent wear.
Estimated cost — typical U.S. ranges
Dealer
~$330–$500
Shop
~$235–$355
DIY
~$60–$180
Some sealed transmissions have no dipstick — fill is precise and best left to a shop. Many drivers can still DIY drain-and-fill.
Spark Plugs
Every 30,000 miReplace spark plugs for optimal combustion, fuel economy, and performance.
Estimated cost — typical U.S. ranges
Dealer
~$285–$390
Shop
~$200–$275
DIY
~$25–$100
Iridium plugs cost more but last 100k+ miles. V6/V8 access varies wildly — some are tough.
Serpentine Belt
Every 50,000 miInspect and replace the serpentine belt to avoid unexpected breakdowns.
Estimated cost — typical U.S. ranges
Dealer
~$195–$235
Shop
~$135–$165
DIY
~$20–$50
DIY-friendly if you can reach the tensioner. Inspect for cracks rather than swap on a strict mileage interval.
Recommended maintenance
Extends the life of your vehicle and improves comfort
Cabin Air Filter
Every 15,000 miReplace the cabin air filter for clean air inside the vehicle.
Estimated cost — typical U.S. ranges
Dealer
~$60–$95
Shop
~$45–$70
DIY
~$15–$40
Usually behind the glovebox. Shops charge labor for a 10-minute job — easy DIY win.
Battery Test & Service
Every 25,000 miTest battery health and clean terminals. Average battery life is 3–5 years.
Estimated cost — typical U.S. ranges
Dealer
~$225–$390
Shop
~$160–$280
DIY
~$130–$250
Most auto-parts stores test and install batteries free with purchase. Skip the dealer markup.
Power Steering Fluid
Every 50,000 miCheck and replace power steering fluid to maintain steering responsiveness.
Estimated cost — typical U.S. ranges
Dealer
~$185–$220
Shop
~$130–$155
DIY
~$15–$40
Most cars built after ~2012 use electric power steering and have no fluid to service.
Known issues for this vehicle
What drivers and federal regulators have officially reported about the 2018 Genesis G90.
Reported to NHTSA
NHTSA has 16 complaints on file for the 2018 Genesis G90 (2018-05 → 2025-05). We haven't reviewed and grouped them yet for this specific YMM — for now, the full list lives on NHTSA.
Top reported components: ELECTRICAL SYSTEM (5) · ENGINE (4) · UNKNOWN OR OTHER (2)
Issues on other model years
Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Jun 13, 2026. Investigation data refreshed Jun 13, 2026.
We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.
Typical U.S. ranges. Actual quotes vary by shop, parts choice, and vehicle condition.
How we estimate: Dealer = OEM parts × 1.4 + labor × $165/hr. Shop = parts + labor × $115/hr. DIY = parts only.
This maintenance schedule for the 2018 Genesis G90 reflects general industry intervals for modern vehicles. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.