2003 Infiniti Q45
Only 12 complaints on file — too few for a fair verdict.
This verdict reflects complaint volume compared to this model's typical year. Recalls and safety issues below apply regardless of the verdict — always check them.
Only 12 complaints on file — too few for a fair verdict. The data below is complete but unranked.
COMPLAINTS PER YEAR
View as data table
| Year | Complaints |
|---|---|
| 1987 | 0 |
| 1988 | 0 |
| 1989 | 0 |
| 1990 | 28 |
| 1991 | 34 |
| 1992 | 28 |
| 1993 | 2 |
| 1994 | 30 |
| 1995 | 7 |
| 1996 | 7 |
| 1997 | 12 |
| 1998 | 14 |
| 1999 | 9 |
| 2000 | 9 |
| 2001 | 5 |
| 2002 | 20 |
| 2003 | 12 |
| 2004 | 7 |
| 2005 | 4 |
| 2006 | 0 |
KNOWN PROBLEM AREAS
Only 12 complaints on file for this model year -- too few to rank by share. Raw counts only, below.
6 of 12 total reports mention: engine.
Show complaint excerpts
THE CIRCUIT BOARD FOR CRANK POSITION SENSOR AND CAM POSITION SENSOR HAVE IMPROPER SOLDER JOINTS.
NHTSA ODI report, 20210505
TL* THE CONTACT OWNS A 2003 INFINITI Q45. WHILE DRIVING 35 MPH, THE VEHICLE STALLED AND THE SERVICE ENGINE WARNING INDICATOR ILLUMINATED. THE CONTACT WAS ABLE TO RESTART THE VEHICLE AFTER SEVERAL ATTEMPTS.
NHTSA ODI report, 20171129
3 of 12 total reports mention: steering.
Show complaint excerpts
BOUGHT 2003 Q 45 IN SPRING 2007, STILL UNDER WARRANTY. JUNE 2009 AT 79,000 MILES THE ENGINE WAS REPLACED (UNDER WARRANTY). 6/30/09, 80,081 MILES CAR PROBLEM WITH NO ACCELERATION AND SERVICE ENGINE AND CRUISE CONTROL LIGHT COMING ON.
NHTSA ODI report, 20130615
3 of 12 total reports mention: electrical system.
Show complaint excerpts
MY 2003 INFINITI Q45 REPEATEDLY STALLS [SO FAR, 15+ TIMES] AND OFTEN WILL NOT RESTART [10+ TIMES].
NHTSA ODI report, 20101105
2 of 12 total reports mention: electronic stability control (esc).
Show complaint excerpts
BOUGHT 2003 Q 45 IN SPRING 2007, STILL UNDER WARRANTY. JUNE 2009 AT 79,000 MILES THE ENGINE WAS REPLACED (UNDER WARRANTY). 6/30/09, 80,081 MILES CAR PROBLEM WITH NO ACCELERATION AND SERVICE ENGINE AND CRUISE CONTROL LIGHT COMING ON.
NHTSA ODI report, 20130615
MY 2003 INFINITI Q45 REPEATEDLY STALLS [SO FAR, 15+ TIMES] AND OFTEN WILL NOT RESTART [10+ TIMES].
NHTSA ODI report, 20101105
1 of 12 total reports mentions: vehicle speed control.
SAFETY TIMELINE
SIDE AIR BAG NON-DEPLOYMENT
Non-deployment of Side Thorax Air Bags
NISSAN IS RECALLING CERTAIN MODEL YEAR 2003-2005 INFINITI Q45 VEHICLES. A WIRING CONNECTOR FOR THE SEAT MOUNTED AIRBAG MAY EXPERIENCE INCREASED ELECTRICAL RESISTANCE, RESULTING IN THE NON-DEPLOYMENT
Remedy: NISSAN WILL NOTIFY OWNERS, AND DEALERS WILL MODIFY THE WIRING CONNECTOR, FREE OF CHARGE. THE SAFETY RECALL BEGAN ON MARCH 19, 2012. OWNERS MAY CONTACT NISSAN CUSTOMER SERVICE AT 1-800-647-7261.
Campaign 12V079000 — check if this car was fixed
BUY-SMART CHECKLIST
2003 Infiniti Q45 — pre-purchase inspection
- Test/inspect for engine issues (6 reports on file for this year).
- Test/inspect for steering issues (3 reports on file for this year).
- Test/inspect for electrical system issues (3 reports on file for this year).
- Verify recall 12V079000 (air bags) has been completed.
FAQ
Is the 2003 Infiniti Q45 reliable?
There isn't enough NHTSA complaint data on file yet to give this model year a verdict.
What are the most common problems with the 2003 Infiniti Q45?
The most-reported component is engine, accounting for 50% of complaints on file.
How many recalls does the 2003 Infiniti Q45 have?
1 recall on file for this model year.
Data updated 2026-07-11 · Complaints are unverified owner reports filed with NHTSA, not independently verified defects. Methodology.