2001 Infiniti QX4 problems & reliability
73 owner complaints filed with NHTSA for the 2001 Infiniti QX4, alongside 4 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
2 complaints report injuries (2 injured).
Federal crash records (FARS 2020–2023): 2001 Infiniti QX4 vehicles were involved in 9 fatal crashes with 3 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Equipment → | 18 | 25% |
| Structure → | 17 | 23% |
| Suspension → | 12 | 16% |
| Power Train | 6 | 8% |
| Steering | 6 | 8% |
| Engine and Engine Cooling | 4 | 5% |
| Fuel System, Gasoline | 4 | 5% |
| Wheels | 4 | 5% |
| Unknown OR Other | 3 | 4% |
| Air Bags | 2 | 3% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
All 19 reported components →Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Among the 38 complaints that included a usable odometer reading, the median reported incident mileage was 102,295 miles (middle 50% between 71,000 and 149,750 miles).
Complaints by incident year
What owners report
“The contact owns a 2001 Infiniti QX4. The contact stated that while driving at unknown speed, there was an abnormal noise coming from the rear of the vehicle. The vehicle was taken to an independent mechanic where it was diagnosed that the rear struts and rear brackets needed to be replaced due to corrosion. The…”
Suspension · filed Mar 25, 2022
“passenger side bottom carriage is completely rusted. steering wheel shakes car makes knocking noise. just noticed there was a recall on it. i’ve only had this vehicle 7 months with 90,000 miles on it.”
Unknown OR Other · filed Jan 11, 2022
“Lower control arm broke due to excessive rust/ corrosion on ENTIRE underside of vehicle. Nearly caused accident . Scared the bejesus out of us . Now afraid to drive.”
Suspension · filed Jan 11, 2022
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Frame/Body Structure Corrosion
Preliminary Evaluation PE11004 · opened Jan 28, 2011 · closed Jun 30, 2011 · led to recall 11V244000
Technical service bulletins
88 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2001 Infiniti QX4. The 10 most recent:
INTELLIGENT KEY NOT DETECTED / ENGINE WILL NOT START This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB13-052E · Service Bulletin/Repair Instructions · issued May 20, 2024
WINDOW GLASS WARRANTY INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB17-009H · Service Bulletin/Repair Instructions · issued Apr 30, 2024
REMOVING FOREIGN MATERIAL FROM THE WINDOW GLASS This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB13-007I · Service Bulletin/Repair Instructions · issued Apr 30, 2024
WINDSHIELD CRACKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB09-039K · Service Bulletin/Repair Instructions · issued Apr 29, 2024
REMOVING FOREIGN MATERIAL FROM THE WINDOW GLASS This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB13-007H · Service Bulletin/Repair Instructions · issued Feb 27, 2023
WINDSHIELD CRACKING This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB09-039J · Service Bulletin/Repair Instructions · issued Feb 27, 2023
WHEEL BEARING COLLISION DAMAGE This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB10-067C · Service Bulletin/Repair Instructions · issued Feb 22, 2023
INFINITI; FRONT SONAR PARKING SENSOR SERVICE INFORMATION This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
ITB16-006A · Service Bulletin/Repair Instructions · issued Mar 24, 2021
EXTERIOR CLEANING INFORMATION SERVICE INFORMATION When cleaning the exterior of an Infiniti vehicle, damage may occur when using a cleaner with too high of an alkaline concentration. - Always refer to the Appearance and…
ITB19-008 · Service Bulletin/Repair Instructions · issued Apr 2, 2019
PLASTIC INTERIOR TRIM PROTECTIVE COVERING REMOVAL SERVICE INFORMATION Vehicles are delivered with plastic interior trim protective covering on the front and rear seats, front and rear door panel finishers, steering…
ITB18-037 · Service Bulletin/Repair Instructions · issued Oct 24, 2018
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2001 Infiniti QX4 has 4 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2001 Infiniti QX4?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Among complaints with usable mileage, the median reported incident mileage was 102,295 miles. This does not predict when a particular vehicle will develop a problem.