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Infiniti QX4: problems, complaints, bulletins

Summary for the Infiniti QX4 across 9 model years: 277 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.

Model years

YearOwner complaintsinvolving a crashTechnical service bulletins (TSB)YouTube repair videos
20061000
20041000
200320200
200237500
200173700
200028100
199943400
199829600
199745700

What fails most often

87654321
  1. 1 Suspension 31% of all complaints
  2. 2 Structure 19% of all complaints
  3. 3 Steering 18% of all complaints
  4. 4 Equipment 8% of all complaints
  5. 5 Service brakes 6% of all complaints
  6. 6 Engine and cooling 6% of all complaints
  7. 7 Fuel system 6% of all complaints
  8. 8 Powertrain 6% of all complaints
Circle size and colour show each component’s share of NHTSA complaints. Schematic only, not a drawing of the exact model.

Engines and transmissions

US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.

Drive: AWD, RWD

Symptoms owners describe

How many of the 277 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).

Components owners complain about

ComponentOwner complaintsinvolving a crashTechnical service bulletins (TSB)
Suspension8750
Structure5200
Steering5170
Equipment2300
Service brakes1840
Engine and cooling1720
Fuel system1720
Powertrain1720
Air bags15100
Vehicle speed control1470
Electrical system1210
Wheels900
Fuel/propulsion system800
Tires600

What owners report

Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.

When owners complained

NHTSA complaints by filing year. The peak shows at what age the problems show up most.

What to check before buying

Other models of this make

Read also

Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-06.