Infiniti Q45 Problems by Model Year
NHTSA recorded 222 consumer complaints across the 14 model years of the Infiniti Q45 (1990–2004) that have at least 5 complaints. 1991 has the most, with 34. Across all years, the part named most often is electrical system (34 mentions). Pick a model year below to see its parts, mileage, recalls and service bulletins.
All Q45 model years
Years with fewer than 5 complaints are not listed. The score compares years of the same model, allowing for the era and for how long each year has collected complaints: 50 is a typical year, lower means fewer complaints. It is not adjusted for sales volume.
| Year | Complaints | Median mi | Recalls | TSBs | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|
| 2004 | 7 | 42,173 | 2 | 51 | — | Not enough data |
| 2003 | 12 | 100,000 | 1 | 47 | — | Not enough data |
| 2002 | 20 | 63,000 | 1 | 43 | — | Stable |
| 2001 | 5 | 174,663 | 1 | 38 | — | Not enough data |
| 2000 | 9 | 18,233 | 1 | 36 | — | Not enough data |
| 1999 | 9 | 114,000 | 0 | 31 | — | Not enough data |
| 1998 | 14 | 77,000 | 3 | 30 | — | Not enough data |
| 1997 | 12 | 125,000 | 3 | 30 | — | Not enough data |
| 1996 | 7 | — | 0 | 28 | — | Not enough data |
| 1995 | 7 | — | 0 | 26 | — | Not enough data |
| 1994 | 30 | — | 0 | 26 | Not compared (before 2008) | Stable |
| 1992 | 28 | 10,500 | 1 | 26 | Not compared (before 2008) | Stable |
| 1991 | 34 | — | 2 | 26 | Not compared (before 2008) | Stable |
| 1990 | 28 | 40 | 1 | 7 | Not compared (before 2008) | Stable |
Parts named most often, all years
Counts add up complaint mentions across the listed years. A complaint can name several parts.
- Electrical system34 19%
- Transmission and drivetrain31 18%
- Air bags25 14%
- Engine cooling22 13%
- Suspension18 10%
- Brakes17 9.7%
- Vehicle speed control16 9.1%
- Steering13 7.4%
Example complaints
One per model year, chosen for length and detail. Personal details are removed. They are consumer reports, not findings.
2002: “I had a problem with my car, with the tires constantly leaking. I had to fill them with air all the time, had them checked a number of times, and had to have the rims cleaned and reground, etc., trying to determine and solve the problem. After incredible aggravation, we finally tracked the problem down to cracks in the valve stems. …”
NHTSA complaint #11228277, filed 2019-06, 60,000 miles2003: “I own a 2003 infinity Q45 and without warning this vehicle stalls where ever it wants at a light while you driving on a major highway on a major street no warning what so ever and infinity is aware of the problem but they only want to help certain VIN numbers. I took my family skiing to scranton pa and on interstate i80 the car stall without warning my entire family could have been killed. Please do something about this is a big issue and before someone gets hurt or killed someone should help.”
NHTSA complaint #10702990, filed 2015-03, 94,000 miles2000: “My 2000 infinity q-45 with 37,000 miles of usage suddenly and without warning completely locked up while under power in the outside lane while on a busy six lane street and would not move. The vehicle we later learned by the dealer had suffered a rear wheel brake and axle complete breakdown and failure. The dealer service department said that we must have driven the car with the emergency brake engaged to cause the axle, brake linings and drums to over heat and fatigue. …”
NHTSA complaint #10199626, filed 2007-08, 34,941 milesOther Infiniti models
1,346 complaintsInfiniti QX60
590 complaintsInfiniti QX56
540 complaintsInfiniti G37
536 complaintsInfiniti Q50
486 complaintsInfiniti M35
461 complaintsInfiniti FX35
445 complaintsInfiniti JX35
281 complaints
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Methodology