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2003 Infiniti Q45Problems, recalls & complaints

NHTSA has logged 12 owner complaints about the 2003 Infiniti Q45, most often about the engine. It is covered by 1 safety recall.

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CarFlaw IndexNot enough dataHigher is better (0–100)
Safety recalls1Free fix at dealersOwner complaints122 with a crash, fire or injuryTypical failure mileage103kEngine, median miles

Source: NHTSA complaints, recalls, investigations and manufacturer recall reports, through May 5, 2021. Updated daily.

Complaints by system

Where the 2003 Infiniti Q45 has problems

12 complaints grouped by the system owners reported.

Box size = number of complaints naming that system. Darker = larger share. One complaint can name more than one system.
Complaints by system
SystemComplaintsCrash, fire or injury
Engine60
Steering30
Electrical system30
Electronic stability control (ESC)20
Service brakes10
Service brakes, electric11
Vehicle speed control10
Engine and engine cooling10
Power train10
1 other systems10

Source: NHTSA Office of Defects Investigation. Complaints are submitted by the public and are not verified by NHTSA.

1 recall

2003 Infiniti Q45 recalls and how many were fixed

Each ring shows the share of affected cars repaired, from the manufacturer’s latest quarterly report to NHTSA. Recall repairs are free at authorized dealers.

Recalls apply to specific cars. To see whether a recall is still open on yours, enter the 17-character VIN at nhtsa.gov/recalls or with Infiniti.

Best & worst years

2003 vs. every other Q45 year

Bars show complaints per model year. Colors show the CarFlaw verdict: complaints weighted for crashes, fires and injuries, adjusted for years on the road and compared with the Q45 median. How we score

'90'91'92'93'94'95'96'97'98'99'00'01'02'03'04'05'06
  • Avoid
  • Caution
  • Solid
  • Best
  • Not rated
NHTSA crash tests

2003 Infiniti Q45 safety ratings

2003 Infiniti Q45 4-DR. w/SAB in NHTSA's New Car Assessment Program. Photos are from NHTSA's crash tests.

  • Stability control: Standard
  • Forward collision warning: No
  • Lane departure warning: No
2 investigations

NHTSA defect investigations

Federal investigations that included the 2003 Infiniti Q45, and the recalls they led to.

  1. Non-deployment of Side Thorax Air BagsEA09005 · closed Apr 3, 2012
    Led to recall 12V-079
  2. SIDE AIR BAG NON-DEPLOYMENTPE08067 · closed Apr 1, 2009
    No recall
In owners' words

What Q45 owners report

Recent engine complaints filed with NHTSA, shortened. Personal details are removed.

THE CIRCUIT BOARD FOR CRANK POSITION SENSOR AND CAM POSITION SENSOR HAVE IMPROPER SOLDER JOINTS. THIS HAS CAUSED THE SERVICE ENGINE LIGHT TO COME ON, THE ENGINE MAY NOT START, POWER REDUCES, ENGINE STALLS AT A TRAFFIC LIGHT OR WHILE IN MOTION, ON A CITY STREET OR HIGHWAY OR WHILE MAKING A TURN.…
Complaint 11415335 · May 5, 2021 · 186,241 miles
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. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE CAMSHAFT…
Complaint 11051157 · Nov 29, 2017 · 150,000 miles
START CAR FIRST THING IN THE AM. DRIVING NORMAL. WITHIN 5 MILES ENGINE SHUTS OFF WITHOUT WARNING. LOOSE ALL POWER. NO CODE APPEARS. AUTO WILL NOT START. FINALLY STARTS AFTER 5 OR 6 TRIES. THIS PROBLEM HAS CONTINUED TO OCCUR EVERY TWO OR THREE DAYS OVER THE LAST SIX MONTHS. BUT AUTO STARTS…
Complaint 10777700 · Sep 25, 2015 · 112,000 miles

Own a 2003 Q45?

Decode your VIN to see the recalls for your exact car, then confirm open recalls with NHTSA.