AI Damage2001 Infiniti QX4: common problems
Owners of the 2001 Infiniti QX4 filed 73 complaints with NHTSA, most often about equipment and structure. Details by component below, with sources.
Key figures
- Owner complaints
- 73
- involving a crash
- 7
What fails most often
- 1 Equipment 26% of all complaints
- 2 Structure 23% of all complaints
- 3 Suspension 16% of all complaints
- 4 Powertrain 8% of all complaints
- 5 Steering 8% of all complaints
- 6 Engine and cooling 5% of all complaints
- 7 Fuel system 5% of all complaints
- 8 Wheels 5% of all complaints
- Equipment: 19 complaints (26% of all).
- Structure: 17 complaints (23% of all).
- Suspension: 12 complaints (16% of all).
- Powertrain: 6 complaints (8% of all), 1 of them with a crash reported by the owner.
- Steering: 6 complaints (8% 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 73 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) |
|---|---|---|---|
| Equipment | 19 | 0 | 0 |
| Structure | 17 | 0 | 0 |
| Suspension | 12 | 0 | 0 |
| Powertrain | 6 | 1 | 0 |
| Steering | 6 | 0 | 0 |
| Engine and cooling | 4 | 1 | 0 |
| Fuel system | 4 | 1 | 0 |
| Wheels | 4 | 0 | 0 |
| Service brakes | 3 | 1 | 0 |
| Air bags | 2 | 2 | 0 |
| Electrical system | 2 | 0 | 0 |
| Fuel/propulsion system | 2 | 0 | 0 |
| Vehicle speed control | 2 | 2 | 0 |
| Visibility | 2 | 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* the contact owns a 2001 infinity qx4. The contact was driving 45 mph when the brakes were depressed but the vehicle failed to stop. The contact was forced to crash into a tree in order to stop the vehicle. The vehicle was destroyed and the contact was reported injured.
The check engine light came on ever since she bought the vehicle. She had the sensors replaced at least six times because the light kept coming on. She said the air bag light never came on.
We were on vacation in orange beach, alabama. While returning from a shopping trip to foley, alabama, we were pulling in to the parking space in front of our condo; my wife, judy, was driving our infiniti qx4 2001 suv.
My wife was driving our qx4 infiniti and while attempting to park the vehicle, it suddenly accelerated; she applied full pressure to the brakes; the car jumped over the curb and rammed into a concrete utility pole. Car was towed by infiniti back to montgomery, al.
While driving with four wheel drive activated, vehicle jerks and system disengages. Vehicle idled extremely fast which resulted in a collision. Dealer stated these symptoms are all normal characteristics of vehicle.
While backing out of driveway and when applying accelerator to go forward pedal went to floor and stuck, causing consumer to lose control of vehicle. Contacted dealer, and an investigator was sent out and stated nothing was wrong.
Consumer was traveling about 50mph on highway and there was a branch log on highway, and vehicle went down an enbankment and hit a tree. Vehicle rolled three times. Dual airbags didn't deploy. Vehicle was totaled.
Its the wheel stud on the driver side left rear....it departed from the vehicke at 55 mph.
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 4,331 of 36,656 model years in the NHTSA data (top 12% most complained about).
On average one model year of the QX4 has 31 complaints (9 years in the data). This year has 73, above average.
What to check before buying
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Suspension. Wheel alignment, control arms, subframe, even tire wear.
- Powertrain. Shift quality under load, harsh shifts, transmission codes, CV joints.
- 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 2001 Infiniti QX4?
Owner complaints to NHTSA most often mention: equipment, structure, suspension. Total complaints: 73. The most frequent symptoms in complaint texts: rust, corrosion (34%), knocking, grinding or other noise (5%), infotainment or screen glitches (4%).
How many service bulletins (TSB) were issued for the 2001 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 2001 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 2001 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.