QX4 (R50)
Reliability Score
Complaints by Engine Code
Infiniti QX4 Unidentified Engine
View details
Complaint Breakdown
VQ35DE
3.5L 6-cylView details
Complaint Breakdown
3.3-V6-Gas
3.3L 6-cylView details
Complaint Breakdown
Owner Complaints by System
Complaints owners filed with NHTSA about the Infiniti QX4, counted across every engine. A complaint can name more than one system.
What to check on a used 2000-2003 Infiniti QX4
On a used 2000-2003 Infiniti QX4, the systems with the most NHTSA owner complaints are the suspension (43), the body and structure (36) and the steering (20). Each one has an inspection step below, with counts as of 2026-10-12. A complaint is an owner report, not a confirmed defect, and counts rise with sales.
- Drive over a speed bump and a rough patch at 15 to 20 mph with the radio off.Safety. NHTSA has 43 owner complaints on the 2000-2003 Infiniti QX4 about the suspension.
- Open and close every door, the hood and the trunk or hatch. Check the latches, the seals and the gaps between panels.Minor. NHTSA has 36 owner complaints on the 2000-2003 Infiniti QX4 about the body and structure.
- Turn the wheel from lock to lock while parked, then drive straight on a level road with a light grip.Safety. NHTSA has 20 owner complaints on the 2000-2003 Infiniti QX4 about the steering.
- Let the engine idle for five minutes, walk around the car and smell for fuel.Safety. NHTSA has 14 owner complaints on the 2000-2003 Infiniti QX4 about the fuel system, all engines combined.
Recalls (9)
Nissan North America, Inc. (Nissan) is recalling certain air bag inflator replacement service parts that may have been installed as part of a theft or collision repair. The parts include certain passenger-side air bag inflators designed to fit Infiniti 2002-2003 QX4, 2006-2010 M35 and M45; Nissan 2001-2003 Maxima, 2002-2006 Sentra, and both driver and passenger-side inflators designed to fit 2007-2012 Versa Sedan and Versa Hatchback vehicles. Please see Nissan's recall report for the specific part numbers. These replacement inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, temperature and temperature cycling.
Nissan North America, Inc. (Nissan) is recalling certain 2001-2003 Maxima, 2002-2006 Sentra, 2002-2004 Pathfinder, 2007-2011 Versa Sedan and Versa Hatchback, 2001-2004 Infiniti I30 and I35, 2002-2003 Inifiniti QX4, 2003-2008 Infiniti FX35 and FX45 and 2006-2010 M35 and M45 vehicles. The vehicles are equipped with non-desiccated, frontal passenger air bag inflators containing phase stabilized ammonium nitrate (PSAN) propellant that were used as interim remedy parts for previous Takata recalls. These inflators may explode due to propellant degradation occurring after long-term exposure to high absolute humidity, high temperatures, and high temperature cycling.
Nissan North America, Inc. (Nissan) is recalling certain 2002 Pathfinder and Infiniti QX4 vehicles. These vehicles are equipped with Takata air bag inflators assembled as part of the passenger frontal air bag modules used as original equipment or replacement equipment. In the event of a crash necessitating deployment of the front air bags, these inflators may rupture.
Nissan North America, Inc. (Nissan) is recalling certain model year 2001-2003 Nissan Maxima, 2002-2004 Pathfinder, 2002-2006 Sentra, 2002-2003 Infiniti QX4 and I35, 2003 FX35 and FX45, and 2001 I30 vehicles. Upon deployment of the passenger side frontal air bag, excessive internal pressure may cause the inflator to rupture.
NISSAN IS RECALLING CERTAIN MODEL YEAR 1996-2004 PATHFINDER AND MODEL YEAR 1997-2003 INFINITI QX4 VEHICLES ORIGINALLY SOLD, OR CURRENTLY REGISTERED IN, CONNECTICUT, DELAWARE, IOWA, ILLINOIS, INDIANA, MASSACHUSETTS, MAINE, MARYLAND, MICHIGAN, MINNESOTA, MISSOURI, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, VERMONT, WASHINGTON D.C., WEST VIRGINIA AND WISCONSIN. IN AREAS OF THE COUNTRY IN WHICH HEAVY CONCENTRATIONS OF ROAD SALT ARE USED, A MIXTURE OF SNOW/WATER AND SALT MAY ENTER AN ASSEMBLY LOCATION HOLE IN THE UPPER STRUT HOUSING, CAUSING WATER TO COLLECT AT THE MATING SURFACE OF THE STRUT HOUSING PANEL AND THE INNER HOOD LEDGE ASSEMBLY. OVER TIME, THIS SNOW/WATER AND SALT INTRUSION MAY RESULT IN CORROSION OF THE STRUT TOWER HOUSING IN SOME SUBJECT VEHICLES.
Show 4 older recalls
NISSAN IS RECALLING FORTY-SIX CERTAIN MODEL YEAR 2002 PATHFINDER AND INFINITI QX4 VEHICLES MANUFACTURED FROM AUGUST 24, 2001 THROUGH AUGUST 28, 2001. THE AIR BAG INFLATOR CONTAINS PROPELLANT WAFERS THAT ARE REQUIRED TO PROPERLY DEPLOY THE FRONT PASSENGER AIR BAG. DUE TO IMPROPER PROPELLANT WAFER INSTALLATION DURING THE AIR BAG INFLATOR ASSEMBLY PROCESS, SOME AIR BAG INFLATORS MAY BE MISSING ONE OF THE WAFERS. AS A RESULT, THE REMAINING WAFERS IN THE INFLATOR USED FOR THE DEPLOYMENT OF THE FRONT PASSENGER AIR BAG MAY, OVER TIME, BREAK UP INTO POWDER DUE TO NORMAL VIBRATION EXPERIENCED WHILE DRIVING. THIS CAUSES THE COMBUSTION RATE OF THE PROPELLANT TO INCREASE INSIDE THE INFLATOR, WHICH CAN LEAD TO INTERNAL PRESSURE RISING SUDDENLY DURING AIR BAG DEPLOYMENT.
ON CERTAIN VEHICLES ORIGINALLY SOLD IN OR CURRENTLY REGISTERED IN THE STATES OF CONNECTICUT, DELAWARE, IOWA, ILLINOIS, INDIANA, KENTUCKY, MASSACHUSETTS, MAINE, MARYLAND, MICHIGAN, MINNESOTA, NEW HAMPSHIRE, NEW JERSEY, NEW YORK, OHIO, PENNSYLVANIA, RHODE ISLAND, TENNESSEE, VERMONT, VIRGINIA, WEST VIRGINIA , WISCONSIN AND THE DISTRICT OF COLUMBIA, DURING THE COATING PROCESS OF THE FUEL FILLER TUBE ASSEMBLY, AN INSUFFICIENT AMOUNT OF COATING MAY HAVE BEEN APPLIED AT THE LOWER MOUNTING BRACKET. THIS COULD RESULT IN AN OPENING IN THE COATING WHICH CAN ALLOW WATER TO ENTER AND MAKE CONTACT WITH THE BARE METAL OF THE TUBE.
VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES. SOME OF THE BRACKETS USED TO ATTACH THE TWO GAS STRUTS TO THE REAR DOOR (HATCH) MAY HAVE BEEN IMPROPERLY MADE. AT HIGH AMBIENT TEMPERATURES, THE INCREASE IN GAS PRESSURE IN THE STRUT(S) COULD CAUSE ONE OR BOTH BRACKETS TO BEND, RESULTING IN THE STRUTS DETACHING FROM THE BRACKET(S) WHEN OPENING OR CLOSING THE REAR DOOR.
VEHICLE DESCRIPTION: PASSENGER VEHICLES. THESE VEHICLES MAY HAVE AN IGNITION LOCK ASSEMBLY WITH IMPROPERLY SEATED KEY CYLINDER CAP CONNECTOR PINS. VIBRATION CAN CAUSE THE CONNECTING PINS TO LOOSEN AND/OR FALL OUT ALLOWING THE KEY CYLINDER CAP TO DISENGAGE FROM THE KEY CYLINDER.
NHTSA Safety Ratings About NHTSA ratings
Alternatives in Midsize SUV
Frequently Asked Questions
What are the most common 2000-2003 Infiniti QX4 complaints?
Owners have filed 161 complaints with NHTSA about the 2000-2003 Infiniti QX4. The systems they name most often are the suspension, the body and trim and the steering.
Is the 2000-2003 Infiniti QX4 a good used car?
That depends on the model year, the mileage and the maintenance history of the car in front of you. Owners have filed 161 complaints with NHTSA about the 2000-2003 Infiniti QX4. Check which systems they name most often and whether a recall is still open on that car.
How many NHTSA complaints does the 2000-2003 Infiniti QX4 have?
NHTSA has 161 owner complaints on file for the 2000-2003 Infiniti QX4 as of the latest data pull. A complaint is an owner's report, not a confirmed defect, and counts rise with sales.
What recalls affect the 2000-2003 Infiniti QX4?
NHTSA lists 9 recalls covering some 2000-2003 Infiniti QX4 vehicles. Which ones apply depends on the VIN: enter it at nhtsa.gov/recalls to see the open campaigns on a specific car.
What should I check before buying a used Infiniti QX4?
Run the VIN through NHTSA's recall lookup and confirm every open recall has been done. Look hardest at the suspension, the body and trim and the steering, the systems owners complain about most. Ask for maintenance records, have an independent mechanic inspect the car and run a vehicle history report for prior accidents and title issues.
What are the NHTSA crash test ratings for the QX4?
The 2003 Infiniti QX4 received an overall N/A-star safety rating from NHTSA. Frontal crash: N/A stars. Side crash: N/A stars. Rollover: 3 stars. Electronic Stability Control: No. Forward Collision Warning: No. Lane Departure Warning: No. These ratings are based on standardized crash tests conducted by the National Highway Traffic Safety Administration.
Data from NHTSA federal complaints database. 161 complaints analyzed. Data confidence: high. Last updated: 2026-10-12.