2018 Genesis G90 reliability

Is it reliable?

NHTSA's file on the 2018 Genesis G90 holds 16 complaints after 9 years, a rate of 3 per year. That is the most complaints per year among the 8 G90 years on this site. NHTSA has 4 recalls on file, including Turbocharger, Solenoid, and Manifold and muffler.

2017 Genesis G90 — Photo by Kevauto, resized from the original. Wikimedia Commons CC BY-SA 4.0

Complaints

Per year

Recalls

Years on the road

What owners report

The complaints owners file most often name Electrical system (5 of 16), then Engine (4) and Fuel and propulsion system (2). Those filings include 1 that reports a crash.

Next to 2017 and 2019

The 2017 G90 has 25 complaints, 2 per year, and the 2019 has 6 complaints, 0 per year. The 2018 has more complaints per year than the 2017. The 2018 has more complaints per year than the 2019.

The complaint rate is complaints filed in this year’s first 3 years on the road, divided by however many of those years have passed. Recalls are a separate count. The numbers are for the US-market 2018 Genesis G90. How we count. Data as of 2026-10-16.

Recalls (4)

Recall engine and cooling, engine, gasoline, turbocharger 2024-03-08 · NHTSA campaign 24V191000

Summary 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.

Remedy 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 electrical system, starter, solenoid 2024-02-13 · NHTSA campaign 24V107000

Summary 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.

Remedy 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).

Recall engine and cooling, exhaust system, manifold and muffler 2019-07-19 · NHTSA campaign 19V538000

Summary 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.

Remedy 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.

Recall visibility, windshield 2018-05-10 · NHTSA campaign 18V305000

Summary 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.

Remedy 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.

Complaints by component (16 total)

Electrical system

Engine

Fuel and propulsion system

Powertrain

Air bags

Forward collision avoidance

Lane departure

Latches, locks, and linkages

Structure

Tires

Show 2 more Show less

Crash-flagged

Fire-flagged

Injury reports

Death reports

Complaints filed per year

Excerpts from recent NHTSA complaint filings

"ProContact GX-SSR CONT M 2754019 SL101H SL BSW"
Tires · filed 2025-05-27
"vehicle went dead. replaced the battery. Started after replacement but went dead a few days later. Towed to dublin CA genesis. Diagnosed as water corrosion to wiring harness. vehicle has less than 22000 miles, other…"
Electrical system, Engine · filed 2024-07-22
"The contact owns a 2018 Genesis G90. The contact received notification of NHTSA Campaign Number: 24V107000 (Electrical System); however, the part to do the recall repair was not yet available. The contact stated that…"
Electrical system · filed 2024-07-02
"The contact owns a 2018 Genesis G90. The contact received notification of NHTSA Campaign Number: 24V107000 (Electrical System) however, the part to do the recall repair was not yet available. The local dealer was…"
Electrical system · filed 2024-05-13
"The internal trunk release latch will not open the trunk. A person inside the trunk compartment may become trapped, increasing their risk of injury. - The trunk latch failed. It is available for inspection, upon…"
Latches, locks, and linkages · filed 2023-01-04

NHTSA crash ratings

Version	Overall	Front	Side	Rollover
2018 Genesis G90 4 DR AWD	Not rated	Not rated	Not rated	Not rated
2018 Genesis G90 4 DR RWD	Not rated	Not rated	Not rated	Not rated

Stars are how this vehicle did in NHTSA crash tests. They are a safety result, separate from the complaint record. Not rated means that test was not run for this version.

Fuel economy

Trim	Engine	Transmission	Drive	City	Hwy	Combined	Annual fuel cost
G90 all-wheel drive	5L, 8-cyl	Automatic (8-speed)	All-wheel drive	15	23	18 MPG	$4450
G90 all-wheel drive	3.3L, 6-cyl	Automatic (8-speed)	All-wheel drive	17	24	20 MPG	$4000
G90 rear-wheel drive	3.3L, 6-cyl	Automatic (8-speed)	Rear-wheel drive	17	24	20 MPG	$4000
G90 rear-wheel drive	5L, 8-cyl	Automatic (8-speed)	Rear-wheel drive	16	24	19 MPG	$4200

Specs and fitment

First generation (HI/RG3), 2017–2020

Body styles Sedan

Oil 5W-20 or 5W-30 (engine dependent; confirm on cap)

Tire size 245/45R19 (trim dependent)

Known issues for this generation

Recall 24V191000 covers certain 2017-2022 Genesis G90 vehicles with the 3.3-liter V6 turbocharged engine (with G80 and G70 listed in the same campaign). The left turbocharger oil feed pipe may deteriorate and leak oil, increasing the risk of an engine compartment fire. Dealers replace the left turbocharger oil feed pipe free of charge; this recall expands and replaces recall 19V-538. Recall 18V305000 covers certain 2018 Genesis G90 vehicles (with G80 in the same campaign) where the windshield and rear window may have been improperly bonded and could detach.

Compare

Previous year 2017 Genesis G90 Next year 2019 Genesis G90 See every Genesis G90 model year →

Frequently asked questions

Is the 2018 Genesis G90 reliable?

What are common problems with a 2018 Genesis G90?

The complaints owners file most often name Electrical system (5 of 16), then Engine (4) and Fuel and propulsion system (2). Those filings include 1 that reports a crash.

Is the 2018 Genesis G90 more reliable than the years next to it?

The 2017 G90 has 25 complaints, 2 per year, and the 2019 has 6 complaints, 0 per year. The 2018 has more complaints per year than the 2017. The 2018 has more complaints per year than the 2019.

Has the 2018 Genesis G90 been recalled?

The 2018 Genesis G90 has 4 recalls on file with NHTSA. See the recalls table on this page for dates, components, and remedies.

How many complaints have owners filed about the 2018 Genesis G90?

Owners have filed 16 complaints about the 2018 Genesis G90 with NHTSA.

What mpg does a 2018 Genesis G90 get?

EPA-rated combined fuel economy for the 2018 Genesis G90 is 19.3 MPG. See the fuel economy table on this page for city and highway figures by engine and transmission.

What engine oil does a US Genesis G90 use?

5W-20 or 5W-30 (engine dependent; confirm on cap)

What tire sizes fit a US Genesis G90?

Published US specs commonly list front 245/45R19 (trim dependent) and rear 245/45R19 (trim dependent); confirm on the door jamb placard for your trim.

What NHTSA recalls affect the US Genesis G90?

Recall 25V833000 covers certain 2023-2026 Genesis G90 vehicles. The Highway Drive Assist corner radar may falsely detect another vehicle and cause sudden, unintended braking. Hyundai advises owners not to use Highway Drive Assist until dealers replace the front bumper beam free of charge.