2001 Infiniti QX4 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
73 owner complaints analyzed
4 distinct recall campaigns
98,000 mi median reported failure mileage
Scope: 2001 model year. Data snapshot: . 40 complaints include usable failure mileage.
Most common problems
Equipment:Electrical:Radio/Tape Deck/Cd Etc. is the most frequently named component, appearing in 12 of 73 complaints (16.4%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Steering behavior | 7 | 9.6% |
| Transmission and shifting | 6 | 8.2% |
| Braking behavior | 6 | 8.2% |
| Fuel system concerns | 3 | 4.1% |
| Engine operation | 2 | 2.7% |
| Electrical and battery issues | 1 | 1.4% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Equipment:Electrical:Radio/Tape Deck/Cd Etc. | 12 |
| Suspension | 10 |
| Structure:Body | 9 |
| Equipment | 6 |
| Power Train:Automatic Transmission | 6 |
| Steering | 6 |
| Structure:Frame And Members | 4 |
| Engine And Engine Cooling:Engine | 3 |
Equipment:Electrical:Radio/Tape Deck/Cd Etc.: 12; Suspension: 10; Structure:Body: 9; Equipment: 6; Power Train:Automatic Transmission: 6; Steering: 6; Structure:Frame And Members: 4; Engine And Engine Cooling:Engine: 3
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 2 |
| 25,000 to 49,999 | 4 |
| 50,000 to 74,999 | 7 |
| 75,000 to 99,999 | 7 |
| 100,000 to 149,999 | 10 |
| 150,000 and above | 10 |
Under 25,000: 2; 25,000 to 49,999: 4; 50,000 to 74,999: 7; 75,000 to 99,999: 7; 100,000 to 149,999: 10; 150,000 and above: 10
100,000 to 149,999 miles has the most reports with usable mileage (10). 33 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2000 | 1 |
| 2001 | 5 |
| 2002 | 4 |
| 2003 | 2 |
| 2004 | 6 |
| 2005 | 1 |
| 2006 | 7 |
| 2007 | 3 |
| 2008 | 5 |
| 2009 | 5 |
| 2010 | 2 |
| 2011 | 13 |
| 2012 | 2 |
| 2013 | 2 |
| 2014 | 2 |
| 2015 | 4 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 1 |
| 2019 | 1 |
| 2022 | 4 |
2000: 1; 2001: 5; 2002: 4; 2003: 2; 2004: 6; 2005: 1; 2006: 7; 2007: 3; 2008: 5; 2009: 5; 2010: 2; 2011: 13; 2012: 2; 2013: 2; 2014: 2; 2015: 4; 2016: 2; 2017: 1; 2018: 1; 2019: 1; 2022: 4
Pattern summary
Equipment:Electrical:Radio/Tape Deck/Cd Etc. leads the component reports. Steering behavior appears in 7 complaint narratives. Transmission and shifting appears in 6 complaint narratives. Braking behavior appears in 6 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 10012180 · 2003-03-20 (March 20, 2003)
WHILE DRIVING THE ENGINE STALLED AND RESULTED IN LOSS OF POWER STEERING AND POWER BRAKES. *NLM THE ENGINE LIGHT WAS ALWAYS ON, BAD CARBON FUMES,THE TRANSMISSION GAINED SPEED ON IT'S OWN, STALLED WHILE TURNING, AND GOING UP HILL'S, AND BLACK SMOKE HAD COME FROM THE VEHICLE. SCC
Owner-reported narrative. Look up ODI 10012180 at NHTSA ↗
Owner report 10347303 · 2010-08-04 (August 4, 2010)
TL* THE CONTACT OWNS A 2001 INFINITI QX4. THE CONTACT STATED FRONT DRIVER SIDE WHEEL WELL RUSTED AND SEPARATED FROM THE FRAME OF THE VEHICLE. THE SHOCK PUSHED UP FROM THE LEFT FRONT OF THE VEHICLE AND PUSHED AGAINST THE MASTER CYLINDER WHICH BROKE THE STEERING SHAFT, CAUSING HIM TO LOSE CONTROL OF THE VEHICLE. THE VEHICLE WAS TOWED TO A LOCAL REPAIR FACILITY. THE MECHANIC ADVISED THAT THE FAILURE WAS BEYOND REPAIR. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT CONTACTED. THE CURRENT AND FAILURE MILEAGES WERE APPROXIMATELY 110,000.
Owner-reported narrative. 110,000 miles reported. Look up ODI 10347303 at NHTSA ↗
Owner report 10064109 · 2004-03-29 (March 29, 2004)
TRANSMISSION SLIPPAGE WHEN TRANSMISSION IS SHIFTING FROM 2ND TO 3RD DURING COLD WEATHER DURING MODERATE ACCELERATION. KNOWN SERVICE BULLETIN, NHTSA #62304. *AK
Owner-reported narrative. 74,000 miles reported. Look up ODI 10064109 at NHTSA ↗
Owner report 10068194 · 2004-05-03 (May 3, 2004)
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. A FULL REPORT WAS DONE BY AN INFINITI REP; WE HAVE HEARD NOTHING TO DATE FROM CONSUMER AFFAIRS. WE ARE HAVING TO LEASE A CAR AT OUR OWN EXPENSE. WE HAVE NO ONE AT INFINITI WHO CAN GIVE US ANY INFORMATION AS TO WHAT IS GOING TO HAPPEN IN THIS INCIDENT. WE ARE AFRAID TO OPERATE THE VEHI…
Owner-reported narrative. 2 miles reported. Look up ODI 10068194 at NHTSA ↗
Owner report 10166803 · 2006-08-28 (August 28, 2006)
INFINITI Q 4, 2001 GAS LEAK- RING NECK TO GAS TANK FAILS , CORRODES, LEAKING GAS ONTO REAR LEFT TIRE AREA. APPARENTLY, HAVE HAD NUMEROUS INCIDENTS SINCE WHEN DISCOVERED, THERE IS A SIZEABLE BACKORDER FOR PART IN QUESTION-DANGEROUS, FUEL LEAKS OPENLY. *NM
Owner-reported narrative. 81,000 miles reported. Look up ODI 10166803 at NHTSA ↗
Owner report 10222811 · 2008-03-25 (March 25, 2008)
2001 INFINITI QX4 RECALL NOTICE OF FAULTY OR DEFECTIVE FUEL FILTER. CONSUMER STATES THAT THERE IS AN INSUFFICIENT AMOUNT OF COATING AT THE LOWER MOUNTING BRACKETS. THIS PROBLEM COULD CAUSE FUEL LEAK FOR PERFORATION OF THE FUEL FILTER TUBE. *KB
Owner-reported narrative. Look up ODI 10222811 at NHTSA ↗
Owner report 10032081 · 2003-08-05 (August 5, 2003)
CONSUMER STATES THAT WHEN VEHICLE IS GOING UP A HILL THE IT WOULD STALL OUT WITHOUT WARNING.*AK
Owner-reported narrative. Look up ODI 10032081 at NHTSA ↗
Owner report 10066618 · 2004-03-31 (March 31, 2004)
PROBLEMS WITH THE TRANSMISSION, ENGINE BELTS, TRANSMISSION FLUID LEAKAGE, ETC... *PH TRANSMISSION FLUID LEAKING, ENGINE BELTS ARE CRACKING AND THERE ARE PROBLEMS WITH THE BATTERY.*MR
Owner-reported narrative. Look up ODI 10066618 at NHTSA ↗