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2018 Genesis G90 Recalls, Issues & Maintenance

The 2018 Genesis G90 carries 4 open NHTSA recalls — most recently covering manifold/header/muffler/tail pipe and windshield. No recurring owner-reported issue clusters are on file. Genesis publishes a straightforward 8,000-mile / 12-month service interval under normal conditions, with a severe schedule most US commuters honestly fall into — short trips, stop-and-go, or temperature extremes cut the oil interval roughly in half. The 2.5T and 3.5T turbo GDI engines reward strict oil discipline: direct injection plus turbo heat is the recipe for intake-valve carbon, and clean oil is the cheapest defense. New vehicles get 3 years / 36,000 miles of complimentary maintenance at the dealer — use it, and keep the records.

4 Open Recalls

Source: NHTSA

ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

Campaign #19V538000 · Jul 19, 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 · Oct 5, 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 · Feb 13, 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 · Aug 3, 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.

Recall data refreshed Sep 6, 2026.

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 grouped them yet for this specific vehicle — for now, the full list lives on NHTSA.

Top reported components: ELECTRICAL SYSTEM (5) · ENGINE (4) · UNKNOWN OR OTHER (2)

Read all complaints on NHTSA →

Issues on other model years

Source: NHTSA Office of Defects Investigation (ODI). Complaint data refreshed Sep 11, 2026. Investigation data refreshed Sep 11, 2026.

We display NHTSA's record with attribution; we don't editorialize on what these complaints mean for any specific vehicle.

Essential maintenance

Critical for safety and preventing major damage

Engine Oil & Filter

Every 8,000 mi

Every 8,000 miles or 12 months under the normal schedule; halve that for mostly short trips or stop-and-go. Full synthetic meeting the manual's spec. Turbo engines (2.5T, 3.3T, 3.5T): don't stretch it — turbo bearings and GDI carbon both punish old oil.

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 8,000 mi

Rotate with every oil service. AWD (HTRAC) models are sensitive to mismatched tire wear — rotate on schedule and replace in sets.

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 8,000 mi

Inspect pads, rotors, and lines at every service. These are heavy, quick sedans and SUVs — G90 and GV80 eat front pads faster than their calm demeanor suggests.

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.

Important maintenance

Keeps your vehicle running smoothly and efficiently

Engine Air Filter

Every 30,000 mi

Replace around 30,000 miles, inspecting yearly. Turbo engines pull hard through the intake — a dirty filter costs boost response before it costs economy.

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.

Automatic Transmission Fluid

Every 60,000 mi

The in-house 8-speed automatic is not a sealed-for-life unit in real-world driving: fluid service around 60,000 miles under severe use (towing, city traffic, hot climates) keeps shifts crisp. Genesis lists longer intervals for easy highway use.

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.

Brake Fluid

Every 30,000 mi

Replace roughly every 30,000 miles or 2 years. Moisture in brake fluid is invisible until a hard stop from speed — cheap insurance on a 4,600-lb GV80.

Estimated cost — typical U.S. ranges

Dealer

~$180–$200

Shop

~$125–$140

DIY

~$10–$25

DOT 3 or 4 — match the cap. Vacuum bleeders make this a one-person DIY.

Spark Plugs

Every 97,500 mi

Iridium plugs rated to about 97,500 miles on most engines. Turbo engines may call for earlier replacement — misfires under boost are the tell.

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.

Recommended maintenance

Extends the life of your vehicle and improves comfort

Cabin Air Filter

Every 15,000 mi

Replace about every 15,000 miles — sooner in dusty climates. Genesis climate systems move a lot of air; a clogged filter shows up as weak defrost first.

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.

Long-Life Coolant

Every 120,000 mi

First replacement around 120,000 miles / 10 years, then every 30,000 miles / 2 years after. Use Hyundai/Genesis-spec phosphate coolant — universal green is not a substitute.

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.

Drive Belt Inspection

Every 60,000 mi

Inspect from 60,000 miles and replace on cracking or glazing rather than mileage alone.

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.

Battery Test & Service

Every 25,000 mi

Test annually after year 3. Genesis models carry heavy electrical loads at rest (sentry-style features, big infotainment) — AGM replacements only, registered to the car where required.

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.

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 Genesis's published service intervals and the Genesis Service Care system. Your actual service needs may vary based on driving conditions, climate, and vehicle usage. Always consult your owner's manual for model-specific recommendations.

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