2004 Infiniti QX56 buying guide

A data-driven checklist for buying a used 2004 Infiniti QX56, built from 106 owner complaints, 1 recall campaigns, 105 service bulletins and federal safety records — not opinions.

Know before you buy

1 recall campaigns affect this model year. Check each one and confirm the repairs were done — recall work is free at any authorized dealer.
Main problem areas: service brakes (33), service brakes, hydraulic (32), electrical system (16), air bags (10), engine (5).
Symptoms owners describe: vibration / shaking (17), brake problems (9), stalling (5), airbag warning light (5). Test-drive with these in mind.
Reported incident mileage: among 89 complaints with a usable odometer reading, half were filed between 30,000 and 115,000 miles (median 87,000). If the car you’re looking at is near that range, ask for service records covering it.
Fuel economy: 14 MPG combined (EPA; engines: 5.6L 8-cyl).

When problems get reported

Reported incident mileage among 89 complaints with usable odometer readings.

under 20k		22
20–40k		2
40–60k		7
60–80k		8
80–100k		16
100–150k		26
150k+		8

Before you hand over money

Run the VIN through our free VIN decoder to confirm the exact build.
Check open recalls by VIN at nhtsa.gov/recalls — a recall that was never fixed is a free repair you can claim.
Get a pre-purchase inspection focused on the problem areas listed above.

This guide is generated from official NHTSA, EPA and FARS records. Complaints are unverified owner reports and raw counts are not adjusted for sales volume.