Avoid: No year grades F. Weakest: 2002
Best: 2004
6 model years of NHTSA owner complaints and recalls · How we grade
Across 10 model years, the Infiniti Q45 has 104 owner-filed NHTSA complaints and 15 recalls on record. The most-reported areas are electrical system and air bags. 2002 drew the most complaints (22), 2005 the fewest (4).
Source: NHTSA complaints and recalls filed for Infiniti Q45 vehicles (US, public record). Typical used asking price $5,332–$10,130.
Complaint volume by model year. Raw NHTSA totals, not adjusted for sales volume or time on the road, so older and higher-selling years accumulate more. Every year links to its full breakdown.
Highest: 2002 (22 complaints). Lowest: 2005 (4).
Sentiment is polarized and heavily dependent on the vehicle's age and condition.
Vehicles lose value rapidly and require very expensive repairs post-100,000 miles, with parts being costly and hard to find.
Numerous sensors fail causing stalling, rough running, and check engine lights; window regulators, key fobs, and HVAC system components are problematic.
Pumps, racks, and high-pressure lines leak and fail, causing fluid expulsion from the reservoir and noisy operation.
Fuel pumps fail and are discontinued, fuel level sensors fail, fuel lines and tanks rust/corrode in older models.
V8 engines require premium fuel and achieve low real-world MPG (examples of 8 MPG and "gas guzzler" are cited), which is a noted ownership cost.
Owner insights cover all generations of the Q45. Individual model years are broken down above.
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