2018 Genesis G90 Problems
- Complaints
- 16filed with NHTSA
- Median mileage
- 6,348miles, 9 complaints with mileage
- Recalls
- 4campaigns on record
- Trend
- StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
- NHTSA crash rating
- —no overall rating published
- EPA fuel economy
- 20 mpgcombined, 3.3L 6-cyl RWD · 17 city / 24 hwy
Sources: NHTSA records for the 2018 Genesis G90 (complaints, recalls, investigations), EPA fuel economy. Report an error
NHTSA recorded 16 consumer complaints for the 2018 Genesis G90. The part named most often is electrical system, with 5 complaints (31% of the total), followed by engine (4) and fuel system (2). 9 of the complaints include a mileage, and 100% of those were filed for vehicles with under 50,000 miles; the median is 6,348 miles. Of all complaints, 1 involved a crash, according to the filers. NHTSA lists 4 recall campaigns and 68 technical service bulletins for this model year. Electrical system complaints overlap with 1 recall campaign covering the solenoid and 19 technical service bulletins filed under the same part. Engine complaints overlap with 4 technical service bulletins filed under the same part.
This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.
Which parts are reported most
Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.
- Electrical system5 31%
- Engine4 25%
- Fuel system2 13%
- Other or unknown2 13%
- Air bags1 6.3%
- Lane departure1 6.3%
- Body and structure1 6.3%
Also reported: Tires (1).
Example complaints
Electrical system: “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 than car washes and normal winter driving in CA. Genesis does have a recall for water intrusion NHTSA ID# 24v107000. I believe my issue is related to this recall but the dealership doesnt think so.”
NHTSA complaint #11603743, filed 2024-07Engine: “My car has been recalled pursuant to NHTSA recall number 19v-538. Despite making four separate attempts, I have been unable to get Genesis to perform the recall. The dealership from which I purchased the car has gone out of business. I have contacted the manufacturer twice, but despite promises, they have been unable to perform the necessary repair.”
NHTSA complaint #11299612, filed 2020-01, 6,348 milesOther or unknown: “Quite randomly, when trying to accelerate from a stop or a very low speed and usually turning into traffic such as out of a driveway, there will be no power response for several seconds after pressing the accelerator pedal.”
NHTSA complaint #11244374, filed 2019-08, 10,000 milesMileage when problems were reported
100% of the 9 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 4,000 and 14,000 miles.
Complaints by year filed
Trend: stable. Complaints filed in the last 3 full calendar years are within 25% of the 3 years before.
Fuel economy and running cost
EPA ratings for each 2018 Genesis G90 version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).
| Version | Engine | Transmission | City | Hwy | Comb. | Fuel / yr |
|---|---|---|---|---|---|---|
| G90 AWD | 3.3L 6-cyl | 8-speed automatic | 17 | 24 | 20 | $4,100 |
| G90 AWD | 5.0L 8-cyl | 8-speed automatic | 15 | 23 | 18 | $4,550 |
| G90 RWD | 3.3L 6-cyl | 8-speed automatic | 17 | 24 | 20 | $4,100 |
| G90 RWD | 5.0L 8-cyl | 8-speed automatic | 16 | 24 | 19 | $4,350 |
Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.
Recalls and investigations
- Electrical system › Starter assembly › SolenoidCovers: Genesis G90 2017–2019, G80 2017–2019, Hyundai Genesis 2015–2016 +1 more
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…
- 24V191000Mar 8, 2024Engine and engine cooling › Engine › Gasoline › Turbo/superchargerCovers: Genesis G90 2017–2022, G70 2019–2022, G80 2018–2020
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.
- 19V538000Jul 19, 2019Engine and engine cooling › Exhaust system › Manifold/header/muffler/tail pipeCovers: Genesis G90 2017–2018, G80 2018
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.
- 18V305000May 10, 2018Visibility › Glass, side/rearCovers: Genesis G90 2018, G80 2018
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.
Recall details for the 2018 Genesis G90 → · Check a VIN at nhtsa.gov/recalls
Technical service bulletins
TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 68 on record; the latest 10 are shown.
- 11038692Oct 22, 2026Body and structure. This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates…
- 11032523Apr 10, 2026Air bags. The National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and dangerous driver’s-side airbag inflators manufactured by Jilin Province Detiannuo Automobile…
- 11032522Apr 10, 2026Air bags. The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding dangerous, counterfeit driver‑side airbag inflators manufactured by Jilin Province Detiannuo…
- 11025476Nov 6, 2025Exterior lighting. This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates…
- 11017471Apr 29, 2025Electrical system. Certain Genesis vehicles may experience an inoperable horn from moisture or carbonization at the contact point. This bulletin provides a guide to inspect and replace the horns.
- 11017111Apr 7, 2025Electrical system. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon's communication network…
- 11015936Mar 18, 2025Electrical system. Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s communication network…
- 11008141Sep 26, 2024Electrical system. On certain 17-19MY G90 (HI) vehicles, the DIS2.0 head units may experience any of the following symptom(s): (1) Battery Drain, (2) Genesis Connected Services (GCS) Activation Issues, (3) Genesis…
- 11006825Aug 12, 2024Wheels. This bulletin provides information to inspect and replace the front or rear wheel bearing hub assemblies for all Genesis vehicles. This procedure is applicable when noise (whirring, roaring…
- 10253275Apr 9, 2024Transmission and drivetrain. This TSB provides a procedure to diagnose and replace, if necessary, an automatic transmission with Incorrect Ratio DTC (transmission clutch slip in gear above limit) listed on Page 2.
Other model years of the Genesis G90
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2023 | 5 | — | 6 | — | 21 | — | Too new |
| 2021 | 5 | — | 1 | — | 19 | — | Not enough data |
| 2019 | 6 | 29,500 | 2 | — | 20 | — | Not enough data |
| 2018 | 16 | 6,348 | 4 | — | 20 | — | Stable |
| 2017 | 26 | 47,433 | 3 | — | 20 | Not compared (fewer than 3 comparable model years) | Rising |
Frequently asked questions
How many NHTSA complaints does the 2018 Genesis G90 have?
NHTSA recorded 16 consumer complaints for the 2018 Genesis G90 as of Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 2018 Genesis G90 is reported most often?
Electrical system is named most often, in 5 complaints (31% of the total), followed by engine with 4.
Has the 2018 Genesis G90 been recalled?
NHTSA lists 4 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
What gas mileage does the 2018 Genesis G90 get?
The EPA rates the 2018 Genesis G90 (G90 RWD, 3.3L 6-cyl) at 20 mpg combined, 17 city and 24 highway, with an estimated annual fuel cost of $4,100 at 15,000 miles a year. Other engine and drive versions are rated differently.
At what mileage are problems with the 2018 Genesis G90 reported?
Among the 9 complaints that include a mileage, the median is 6,348 miles and the middle half falls between 4,000 and 14,000 miles; 100% were filed for vehicles with under 50,000 miles.
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Fuel economy is from the EPA and DOE (fueleconomy.gov).
Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.