AI Damage2018 Genesis G90: common problems
Owners of the 2018 Genesis G90 filed 16 complaints with NHTSA, most often about electrical system and engine. The maker issued 41 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 16
- involving a crash
- 1
- Technical service bulletins (TSB)
- 41
What fails most often
- 1 Electrical system 31% of all complaints
- 2 Engine 25% of all complaints
- 3 Powertrain 13% of all complaints
- 4 Fuel/propulsion system 13% of all complaints
- 5 Tires 6% of all complaints
- 6 Air bags 6% of all complaints
- 7 Structure 6% of all complaints
- 8 Forward collision avoidance 6% of all complaints
- Electrical system: 5 complaints (31% of all), 1 of them with a crash reported by the owner; manufacturer bulletins for this component: 10.
- Engine: 4 complaints (25% of all).
- Powertrain: 2 complaints (13% of all); manufacturer bulletins for this component: 6.
- Fuel/propulsion system: 2 complaints (13% of all).
- Tires: 1 complaints (6% of all); manufacturer bulletins for this component: 3.
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 3.3 L · petrol · turbo · 6 cyl
- 5 L · petrol · 8 cyl
- automatic, 8-speed
Drive: RWD, AWD
Symptoms owners describe
How many of the 16 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 5 | 1 | 10 |
| Engine | 4 | 0 | 0 |
| Powertrain | 2 | 0 | 6 |
| Fuel/propulsion system | 2 | 0 | 0 |
| Tires | 1 | 0 | 3 |
| Air bags | 1 | 0 | 2 |
| Structure | 1 | 0 | 1 |
| Forward collision avoidance | 1 | 1 | 0 |
| Lane departure | 1 | 1 | 0 |
| Latches, locks, linkages | 1 | 0 | 0 |
| Equipment | 0 | 0 | 13 |
| Wheels | 0 | 0 | 5 |
| Engine and cooling | 0 | 0 | 3 |
| Exterior lighting | 0 | 0 | 2 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Suddenly, for no apparent reason, every warning light in the dashboard illuminated at once. The LED screen was rapidly displaying messaged such as, "blind spot monitoring system malfunction, smart BDS braking system malfunction, check smart high beam, check PSB, shifter malfunction, traction control malfunction, ESC…
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.
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 the manufacturer had exceeded a reasonable amount of time for the recall repair.
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 request. - A person inside the trunk compartment may become trapped, increasing their risk of injury.
The contact stated when stopped at a traffic light and attempting to accelerate, the vehicle hesitated for a few seconds before accelerating. The contact took the vehicle to the local dealer towne hyundai (3170 nj-10, denville, [ZIP]) however, the mechanic was unable to duplicate the failure or retrieve a fault code.
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.
Air bag warning light comes on ,every trip we take. After about 500 miles air bag light comes on stays on for up to 1000 miles then goes out again. Light will come on while driving and then stays on even when stopped and parked over night while being used on highway.
Outside mirrors and windshield continue to melt and according to the genesis engineer, this is due to the sunlight reflecting off my house and onto my car thus causing the mirror and molding to melt
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 1,335 of 2,102 model years in the NHTSA data (among the 36% least complained about).
On average one model year of the G90 has 7 complaints (10 years in the data). This year has 16, above average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Fuel/propulsion system. Fuel smell, leaks, rough running, fuel-system codes.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- The National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and…
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 Safety System Co…
- The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding…
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 Automobile Safety…
- This bulletin provides information regarding condensation related to the accumulated moisture in the…
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 the various causes of…
- 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.
- Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service…
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. If you are…
- Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service…
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. Follow the…
- 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 Connected Services Remote Service Failures, (4) Genesis Connected Services Point of Interest Failures. Follow the instructions in…
- This bulletin provides information to inspect and replace the front or rear wheel bearing hub assemblies…
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, grinding, rumbling, etc.)…
- This TSB provides a procedure to diagnose and replace, if necessary, an automatic transmission with…
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.
- Genesis applies a Paint Protection Film (PPF) on new vehicles before delivery to dealerships
It provides a barrier between the paint and contaminants, such as rail dust, acid rain, and industrial fallout. In rare cases, the paint can become clouded under the PPF. These spots are the result of moisture trapped…
- Some vehicles may experience seat noise from seat bottom when vehicle is turning
This bulletin describes the procedure to install an e-ring clip to the tilt pipe housing on the front seat.
- If you are servicing a vehicle with a transmission slipping concern, follow the Service Procedure shown…
If you are servicing a vehicle with a transmission slipping concern, follow the Service Procedure shown below and perform a stall test. This TSB provides a procedure to test each clutch in the transmission. If the…
NHTSA lists 41 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2018 Genesis G90?
Owner complaints to NHTSA most often mention: electrical system, engine, powertrain. Total complaints: 16. The most frequent symptoms in complaint texts: hesitation when accelerating (13%), warning lights, check engine (13%), driver assists: adaptive cruise, lane keeping (6%).
How many service bulletins (TSB) were issued for the 2018 Genesis G90?
NHTSA lists 41 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2018 Genesis G90 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2018 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.