2004 Infiniti Q45 Engine Problems
- Complaints
- 2about this part
- Share
- 29%of 7 total for the year
- Median mileage
- 103,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the engine of the 2004 Infiniti Q45, 29% of the 7 complaints for this model year. Where a mileage was given, the median is 103,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“The contact owns a 2004 Infiniti Q45. The contact stated that while driving at 40 MPH, the engine stalled while the service engine soon warning light and another unknown light illuminated. The vehicle was able to restart. The contact stated that the vehicle failed to accelerate after the failure occurred. The vehicle was taken to an independent mechanic where it was diagnosed that the cam position sensor failed and needed to be replaced. The vehicle was repaired, however the failure recurred. The vehicle was not repaired. The manufacturer was not notified of the failure. …”
NHTSA complaint #10984183, filed 2017-05, 111,000 milesEngine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2004 | 2 | 29% |
| 2003 | 6 | 50% |
Other parts of the 2004 Infiniti Q45
3 complaintsExterior lighting
2 complaintsSteering
2 complaintsVehicle speed control
2 complaintsBrakes
1 complaintsSeats
1 complaintsBody and structure
1 complaints
← All problems reported for the 2004 Infiniti Q45
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology