AI Damage2021 Genesis G90: common problems
Owners of the 2021 Genesis G90 filed 5 complaints with NHTSA, most often about forward collision avoidance and electrical system. The maker issued 20 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 5
- involving a crash
- 1
- Technical service bulletins (TSB)
- 20
What fails most often
- 1 Forward collision avoidance 40% of all complaints
- 2 Electrical system 20% of all complaints
- 3 Engine 20% of all complaints
- 4 Fuel/propulsion system 20% of all complaints
- 5 Steering 20% of all complaints
- 6 Tires 20% of all complaints
- Forward collision avoidance: 2 complaints (40% of all), 1 of them with a crash reported by the owner.
- Electrical system: 1 complaints (20% of all); manufacturer bulletins for this component: 3.
- Engine: 1 complaints (20% of all).
- Fuel/propulsion system: 1 complaints (20% of all).
- Steering: 1 complaints (20% of all).
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 5 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) |
|---|---|---|---|
| Forward collision avoidance | 2 | 1 | 0 |
| Electrical system | 1 | 0 | 3 |
| Engine | 1 | 0 | 0 |
| Fuel/propulsion system | 1 | 0 | 0 |
| Steering | 1 | 0 | 0 |
| Tires | 1 | 0 | 0 |
| Powertrain | 0 | 0 | 8 |
| Air bags | 0 | 0 | 2 |
| Visibility | 0 | 0 | 2 |
| Engine and cooling | 0 | 0 | 1 |
| Equipment | 0 | 0 | 1 |
| Exterior lighting | 0 | 0 | 1 |
| Seats | 0 | 0 | 1 |
| Structure | 0 | 0 | 1 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
My 2021 Genesis G90 has experienced repeated failures of the main infotainment / viewing display system, which has been replaced multiple times by authorized Genesis dealers. Despite these repairs, the defect continues to recur.
The centre console screen has completely failed and has gone black. Yes, the screen is available for inspection upon request. The screen houses access to most safety systems in the car, including the reverse camera, front camera, collision avoidance system settings, lane safety settings, blind spot monitoring settings…
Steering wheel started jerking left and right and the power steering light flickered on and off. The steering wheel stopped jerking and the power steering light remained on. I no longer had power steering and car was difficult to control. The emergency braking assist light came on as well.
The vehicle started smoking and stalled out Aug 18,2023. The vehicle starting shaking then I parked it for about two (2) hours. When I tried to crank vehicle again it wouldn’t crank. I attempted to complete diagnostic test but the vehicle wouldn’t remain on. I contacted dealership I purchased it from.
This is not about a tire failure but rather dangerous mis sizing of tires from factory.I bought the car new. It was never in an accident or had a flat tire and did not have service call until this week at 13000 or so miles.the service included tire rotation and balance, but the service man called and said he wasn’t…
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 1,688 of 2,102 model years in the NHTSA data (among the 20% least complained about).
On average one model year of the G90 has 7 complaints (10 years in the data). This year has 5, below average.
What to check before buying
- Forward collision avoidance. Radar and camera: calibration after bumper or windshield replacement.
- 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.
- 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…
- Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Connected Car…
Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Connected Car Services functions. This may be due to an irregular disconnection on Verizon’s communication network. Follow the…
- 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.
- 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.)…
- 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…
- This TSB provides a procedure to diagnose and repair a transmission for the following Incorrect Ratio DTC…
This TSB provides a procedure to diagnose and repair a transmission for the following Incorrect Ratio DTC (transmission clutch slipping more than 200 rpm in gear).
- This bulletin provides a procedure to diagnose an 8-speed automatic transaxle with a harsh and/or delayed…
- This bulletin provides a procedure to transfer oil pressure data to the TCU using GDS Mobile
This procedure is necessary to reduce the TCU learning time and improve the shift quality. ï· Before replacing an automatic transmission: Input the data into the TCU using the GDS. ï· Before replacing a TCU: Back up…
- This bulletin provides a procedure to transfer oil pressure data to the TCU using GDS Mobile
This procedure is necessary to reduce the TCU learning time and improve the shift quality. ï· Before replacing an automatic transmission (Pages 2~3): Input the data from the new transmission into the TCU using the…
- Some vehicles may experience seat noise and/or possible wobble movement from the seat bottom when the…
Some vehicles may experience seat noise and/or possible wobble movement from the seat bottom when the vehicle is turning. This bulletin describes the procedure to install an e-ring clip to the tilt pipe housing on the…
NHTSA lists 20 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 2021 Genesis G90?
Owner complaints to NHTSA most often mention: forward collision avoidance, electrical system, engine. Total complaints: 5. The most frequent symptoms in complaint texts: driver assists: adaptive cruise, lane keeping (40%), infotainment or screen glitches (40%), rear-view camera (20%).
How many service bulletins (TSB) were issued for the 2021 Genesis G90?
NHTSA lists 20 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 2021 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 2021 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.