AI Damage2005 Infiniti Q45: common problems
Owners of the 2005 Infiniti Q45 filed 4 complaints with NHTSA, most often about air bags and electrical system. Details by component below, with sources.
Key figures
- Owner complaints
- 4
- involving a crash
- 1
What fails most often
- 1 Air bags 25% of all complaints
- 2 Electrical system 25% of all complaints
- 3 Seats 25% of all complaints
- 4 Tires 25% of all complaints
- 5 Vehicle speed control 25% of all complaints
- Air bags: 1 complaints (25% of all), 1 of them with a crash reported by the owner.
- Electrical system: 1 complaints (25% of all).
- Seats: 1 complaints (25% of all), 1 of them with a crash reported by the owner.
- Tires: 1 complaints (25% of all).
- Vehicle speed control: 1 complaints (25% of all).
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 4.5 L · petrol · 8 cyl
- automatic, 5-speed
Drive: RWD
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Air bags | 1 | 1 | 0 |
| Electrical system | 1 | 0 | 0 |
| Seats | 1 | 1 | 0 |
| Tires | 1 | 0 | 0 |
| Vehicle speed control | 1 | 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.
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.
When cruise control is set, and the need to pass or speed up is required, if you press the gas pedal to the floor the car takes off and *then stops responding and drops back to set cruise control speed while you are still flooring it. It bucks back and forth.
After only 3500 miles the rear right tire blew on the highway, fortunately for me there was heavy traffic and I was not doing over 30mph. The tire was replaced with the spare tire and then it was discovered a 3" gash from the side wall to the first thread.
Tl contact owns a 2005 infiniti q45. While the vehicle was parked, the contact attempted to start the vehicle; however, the key would not turn in the ignition. She called aaa to get the vehicle to start. The vehicle was taken to the dealer for service, but no failures were found at that time.
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 15,521 of 36,656 model years in the NHTSA data (top 42% most complained about).
On average one model year of the Q45 has 14 complaints (16 years in the data). This year has 4, below average.
What to check before buying
- Air bags. Check the SRS light, stored codes and airbag/curtain status after any impact.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Seats. Occupant sensor, power adjustment, seat mounts.
- Tires. Tire age by DOT code, bulges, wear pattern.
Other years of this model
Questions and answers
What are the most common problems with the 2005 Infiniti Q45?
Owner complaints to NHTSA most often mention: air bags, electrical system, seats. Total complaints: 4. The most frequent symptoms in complaint texts: airbags did not deploy (25%).
How many service bulletins (TSB) were issued for the 2005 Infiniti Q45?
NHTSA lists 0 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 2005 Infiniti Q45 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 2005 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 2026-11-05.