AI Damage2003 Infiniti QX4: common problems
Owners of the 2003 Infiniti QX4 filed 20 complaints with NHTSA, most often about suspension and structure. Details by component below, with sources.
Key figures
- Owner complaints
- 20
- involving a crash
- 2
What fails most often
- 1 Suspension 40% of all complaints
- 2 Structure 30% of all complaints
- 3 Service brakes 15% of all complaints
- 4 Steering 10% of all complaints
- 5 Air bags 5% of all complaints
- 6 Engine 5% of all complaints
- 7 Fuel/propulsion system 5% of all complaints
- 8 Powertrain 5% of all complaints
- Suspension: 8 complaints (40% of all).
- Structure: 6 complaints (30% of all).
- Service brakes: 3 complaints (15% of all), 1 of them with a crash reported by the owner.
- Steering: 2 complaints (10% of all), 1 of them with a crash reported by the owner.
- Air bags: 1 complaints (5% of all).
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- 3.5 L · petrol · 6 cyl
- automatic, 4-speed
Drive: RWD, AWD
Symptoms owners describe
How many of the 20 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Suspension | 8 | 0 | 0 |
| Structure | 6 | 0 | 0 |
| Service brakes | 3 | 1 | 0 |
| Steering | 2 | 1 | 0 |
| Air bags | 1 | 0 | 0 |
| Engine | 1 | 0 | 0 |
| Fuel/propulsion system | 1 | 0 | 0 |
| Powertrain | 1 | 0 | 0 |
| Visibility | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
Tl contact owns a 2003 infiniti qx4. The contact stated the steering wheel became unresponsive while changing lanes. As a result the vehicle was involved in a rollover crash. A police report was filed and all four passengers in the vehicle suffered minor injuries.
Once the tree branch was released, my abs light came on. I took my vehicle to my inifiniti dealer who put the vehicle on a lift. Examination showed no damage to the vehicle other than the wiring assembly to the front wheel sensor had its wire and electrical pin pulled from the electrical connector to the front wheel…
I keep getting notices about this airbag recall, but this vehicle was donated to hudson high school and broken down for parts. This vehicle hasn't been on the road for over 3 years. Please take this off the recall list.
Bought a used car from a used car dealer with 1 previous owner. In 2011 a recall was supposedly done by indicating "inspected!" why wasn't the parts replaced?
The recall was performed six years ago, however rust, and holes in the metal are now visible. I was told that because the recall was already performed, there was nothing they could do to assist me. This vehicle will soon be unsafe to drive.
The control arm is completely rusted away as the pathfinders that they recalled and is doing exactly as they have done...but there is no recall on the infiniti I was wondering why those and not the infiniti as we live in massachusetts and the salt does the same on this car now we have the death womble on this car
While driving over 45 mph, the front end of the vehicle shook and vibrated. The vehicle was taken to the dealer where it was discovered that the engine cradle was cracked due to rusting and corrosion. The manufacturer was notified of the failure. The failure mileage was 200,000.
Fuel filler neck has corroded causing gas to leak on to tire and brakes while filling gas tank. Recall of previous model.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
Comparison
By complaint count this model year ranks 8,257 of 36,656 model years in the NHTSA data (top 23% most complained about).
On average one model year of the QX4 has 31 complaints (9 years in the data). This year has 20, below average.
What to check before buying
- Suspension. Wheel alignment, control arms, subframe, even tire wear.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Steering. Steering play, power assist, rack and tie rods after a wheel impact.
Other years of this model
Questions and answers
What are the most common problems with the 2003 Infiniti QX4?
Owner complaints to NHTSA most often mention: suspension, structure, service brakes. Total complaints: 20. The most frequent symptoms in complaint texts: rust, corrosion (55%), vibration (10%), stalls while driving (5%).
How many service bulletins (TSB) were issued for the 2003 Infiniti QX4?
NHTSA lists 0 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2003 Infiniti QX4 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2003 models
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 2026-11-05.