Own a Genesis G90 in the Phoenix area? EZ Swap LLC repairs and maintains the Genesis G90 for model years 2017 to 2026. Our shop at 9050 N 9th St handles everything from routine service to diagnostics and major repairs.
To help G90 owners know what to watch for, we reviewed public records from the National Highway Traffic Safety Administration (NHTSA). For these model years NHTSA has 70 owner complaints on file for the G90 and 10 safety recall campaigns. The most-reported problem areas are electrical system (19), engine (14), fuel/propulsion system (8).
Most-Reported Genesis G90 Problems
These problem areas come up most often in NHTSA owner complaints for the G90 (all model years combined). Complaint counts reflect reports filed, not the share of vehicles affected, so popular and older models naturally have more.
| Problem area (NHTSA component) | Complaints | Share | |
|---|---|---|---|
| Electrical System | 19 | 27% | |
| Engine | 14 | 20% | |
| Fuel/Propulsion System | 8 | 11% | |
| Steering | 6 | 8% | |
| Engine And Engine Cooling | 6 | 8% | |
| Forward Collision Avoidance | 6 | 8% | |
| Power Train | 6 | 8% | |
| Wheels | 5 | 7% |
Electrical System
19 of the 70 complaints (27%) mention the electrical system. Electrical problems are made worse by desert heat, which ages batteries, cables and connectors. We test the battery, starter and charging system and trace faults to the actual part. See our battery replacement and starter & alternator repair pages.
Engine
14 of the 70 complaints (20%) mention the engine and cooling system. Engine and cooling complaints are best caught early in Phoenix, where heat pushes cooling systems and engine oil to their limits. We diagnose warning lights and check coolant, hoses and oil condition. See our check engine light diagnostics and oil change & maintenance pages.
Fuel/Propulsion System
8 of the 70 complaints (11%) mention the fuel system. Fuel system problems can cause stalling, hard starts and poor mileage. We test fuel delivery and related sensors to find the real cause. See our no-start diagnostics and check engine light diagnostics pages.
Genesis G90 Complaints by Model Year
The G90 model years with the most NHTSA complaints on file are 2017, 2018, 2019. Older model years have had more time to collect reports, so use this table as a guide for what to inspect, not as a verdict on any one vehicle.
| Model year | Complaints on file | |
|---|---|---|
| 2017 | 26 | |
| 2018 | 16 | |
| 2019 | 6 | |
| 2020 | 3 | |
| 2021 | 5 | |
| 2022 | 4 | |
| 2023 | 5 | |
| 2024 | 3 | |
| 2025 | 2 |
Genesis G90 Check Engine Codes
NHTSA owner complaints rarely cite specific trouble codes for the G90, so we do not have a model-specific ranking to show. These are the check engine codes we see most often on vehicles in Phoenix heat, and any of them can show up on a Genesis.
| Code | What it means |
|---|---|
| P0420 | Catalyst efficiency below threshold (bank 1) Often a worn catalytic converter, but failing oxygen sensors or exhaust leaks can set it too. Can cause an emissions test failure. |
| P0300 | Random or multiple cylinder misfire Worn spark plugs, failing ignition coils, fuel or vacuum problems. Do not ignore a flashing check engine light. |
| P0171 | System too lean (bank 1) Often a vacuum leak, dirty MAF sensor, weak fuel delivery or a failing oxygen sensor. |
| P0455 | EVAP system large leak Missing or loose gas cap, or a disconnected or cracked vapor hose. |
| P0128 | Coolant temperature below thermostat regulating temperature Usually a thermostat stuck open. Fix it to restore efficiency and cabin heat. |
| P0442 | EVAP system small leak Loose or worn gas cap, cracked hose or purge or vent valve. |
| P0301 | Cylinder 1 misfire Commonly a bad spark plug or ignition coil on that cylinder. |
| P0401 | EGR flow insufficient Clogged EGR passages or a stuck EGR valve. |
Got a check engine light on your G90? A code is a clue, not a diagnosis, so we scan it and test the system before replacing anything. See our check engine light diagnostics.
Genesis G90 Safety Recalls
NHTSA lists 10 recall campaigns for the G90 in these model years, most often involving electrical system, engine and engine cooling, fuel system, gasoline. Recalls are repaired by the manufacturer at no charge to you, but each applies only to certain vehicles. Look up your VIN at nhtsa.gov/recalls.
- 2026 recall, Seat Belts (campaign 26V218000): Hyundai Motor America (Hyundai) is recalling certain 2023-2025 Hyundai Ioniq 6, 2023-2026 Genesis G90, 2024-2026 Hyundai Santa Fe, and Hyundai Santa Fe Hybrid vehicles. The driver and passenger seat belt anchors may detach.
- 2026 recall, Fuel System, Gasoline (campaign 26V229000): Hyundai Motor America (Genesis) is recalling certain Genesis 2022-2026 GV70, 2023-2025 G90, 2021-2025 G80, and GV80 vehicles. Fuel may leak at the pipe connection between the fuel pipe and fuel rail.
- 2025 recall, Electrical System (campaign 25V474000): Hyundai Motor America (Hyundai) is recalling certain Genesis 2023-2025 G90 and GV60 vehicles. Due to a software error, the instrument panel display may fail.
- 2025 recall, Electrical System (campaign 25V833000): Hyundai Motor America (Hyundai) is recalling certain 2023-2026 Genesis G90 vehicles. The Highway Drive Assist (HDA) corner radar may falsely detect another vehicle, which can result in sudden, unintended braking while driving.
- 2024 recall, Electrical System (campaign 24V107000): Hyundai Motor America (Hyundai) is recalling certain 2015-2016 Genesis, 2017-2019 Genesis G80, Genesis G90, and 2019 Genesis G70 vehicles.
- 2024 recall, Engine And Engine Cooling (campaign 24V191000): 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.
Serious Incident Reports
Of the NHTSA complaints on file for the G90, 7 involved a crash, 2 reported injuries. These numbers are drawn from self-reported complaints and are not verified findings. If your vehicle has an open recall, get it repaired promptly.
Keeping a Genesis G90 Reliable in Phoenix
Arizona heat is the hardest test a Genesis will face. Batteries, belts, hoses, tires and engine oil all wear faster here, and a G90 that spends its life in stop-and-go Valley traffic needs maintenance earlier than the owner's manual's normal schedule suggests.
Our recommendation for G90 owners: follow the severe-service schedule, test the battery before every summer, inspect brakes and tires twice a year, and have any warning light diagnosed instead of ignored. If you are shopping for a used Genesis G90, a pre-purchase inspection shows what the paperwork does not.
Genesis G90 Services at EZ Swap LLC
Get the details on our Phoenix Genesis G90 repair service, or choose a service below.
Battery Replacement
Test, replace and protect against Phoenix heat.
Details →Starter & Alternator Repair
Charging and starting system repair.
Details →Check Engine Light Diagnostics
Scan, test and pinpoint the real cause.
Details →Oil Change & Maintenance
Oil, filters, fluids, tires and scheduled service.
Details →No-Start Diagnostics
Find out why it will not start.
Details →Genesis G90 FAQ
What are the most common problems with the Genesis G90?
Based on NHTSA owner complaints, the most-reported problem areas for the Genesis G90 are electrical system (19), engine (14), fuel/propulsion system (8). Complaint counts reflect reports filed, not the share of vehicles affected.
Which G90 model years have the most complaints?
The G90 model years with the most NHTSA complaints on file are 2017, 2018, 2019. Older years have had longer to collect reports, so inspect any specific vehicle before buying.
What check engine codes are common on the Genesis G90?
NHTSA complaints rarely cite specific codes for the Genesis G90. On Phoenix vehicles in general, we see P0420, P0300 misfires, P0171 lean conditions and EVAP leaks such as P0455 and P0442 most often. Bring yours in and we will scan and test it.
Does the Genesis G90 have any safety recalls?
NHTSA lists 10 recall campaigns for the Genesis G90 across model years 2017 to 2026. Each recall applies only to certain vehicles, so enter your VIN at nhtsa.gov/recalls to see if yours is affected.
Do you repair the Genesis G90 in Phoenix?
Yes. EZ Swap LLC repairs and maintains Genesis vehicles including the G90, at 9050 N 9th St in Phoenix. Call or text (602) 246-9063 for an appointment.
Is a pre-purchase inspection worth it for a used Genesis G90?
Yes. An inspection checks the engine, transmission, brakes, suspension, A/C and electrical system, and scans for stored codes, so you know the real condition before you buy.
How often should I service my Genesis G90 in Phoenix?
Follow the severe-service schedule in your owner's manual, since heat and stop-and-go driving count as severe use. Test the battery before summer and inspect brakes and tires regularly.
More Genesis Models We Service
Source: public complaint and recall records from the National Highway Traffic Safety Administration (nhtsa.gov). Counts reflect reports filed and do not predict the condition of any individual vehicle.