AI DamageInfiniti Q45: problems, complaints, bulletins
Summary for the Infiniti Q45 across 16 model years: 228 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
What fails most often
- 1 Electrical system 15% of all complaints
- 2 Powertrain 14% of all complaints
- 3 Air bags 12% of all complaints
- 4 Engine and cooling 10% of all complaints
- 5 Suspension 8% of all complaints
- 6 Vehicle speed control 7% of all complaints
- 7 Service brakes 7% of all complaints
- 8 Fuel system 6% of all complaints
- Electrical system: 35 complaints (15% of all), 2 of them with a crash reported by the owner.
- Powertrain: 32 complaints (14% of all), 2 of them with a crash reported by the owner.
- Air bags: 27 complaints (12% of all), 14 of them with a crash reported by the owner.
- Engine and cooling: 22 complaints (10% of all), 1 of them with a crash reported by the owner.
- Suspension: 18 complaints (8% of all), 2 of them with a crash reported by the owner.
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 4.1 L · petrol · 8 cyl 1997–2001
- 4.5 L · petrol · 8 cyl 1990–2006
- automatic, 4-speed 1990–2001
- automatic, 5-speed 2002–2006
Drive: RWD
Symptoms owners describe
How many of the 228 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 | 35 | 2 | 0 |
| Powertrain | 32 | 2 | 0 |
| Air bags | 27 | 14 | 0 |
| Engine and cooling | 22 | 1 | 0 |
| Suspension | 18 | 2 | 0 |
| Vehicle speed control | 17 | 3 | 0 |
| Service brakes | 16 | 3 | 0 |
| Fuel system | 13 | 0 | 0 |
| Steering | 13 | 2 | 0 |
| Tires | 13 | 1 | 0 |
| Equipment | 12 | 0 | 0 |
| Wheels | 11 | 1 | 0 |
| Visibility | 10 | 0 | 0 |
| Engine | 8 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Blowout caused loss of steering while in the process sent vehicle into oncoming traffic.
The air bags did not deploy and the front driver's seat twisted toward the driver's door during the crash. The contact suffered injuries and was taken to the hospital. The vehicle was towed to the contact's home. The failure was not diagnosed or repaired. The manufacturer was not made aware of the failure.
A few days later the car is in an accident due to brake failure. Come to find out, both dealerships are owned by the same people thus making collusion to hide this safety issue a very easy road to travel.
Tl* - the contact stated that she had purchased 1992 infinity q45 on 02/2006 ,and on 12/21/06 the contact's vehicle was involved in a crash. The contact stated that the vehicle steering was difficult to handle. The contact stated that she has had problems with the transmission leaking.
On tuesday august 30 the right rear tire blew out causing the vehicle to slide on the right side and eventually overturn. Is it normal with a steel belted radial for the thread surface to come completely off the sidewall.
Upon impact, the air bags failed to deploy. The driver and passenger sustained injuries, but did not seek immediate medical attention. The impact was so great that it pushed back the frame rail one inch. The consumer is questioning whether or not the vehicle even has air bags and wants nissan to inspect the vehicle.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
Other models of this make
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 2026-11-06.