Problems · NHTSA complaints
2003 Infiniti QX4 problems
Owners filed 22 complaints about the 2003 Infiniti QX4 with NHTSA between Mar 2003 and Jul 2019. The most-cited component is suspension (8).
Complaints
22
Filed with NHTSA
Crashes
2
Reported by owners
Fires
0
Reported by owners
Injuries
4
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Suspension8
- Structure6
- Service brakes, hydraulic3
- Steering2
- Air bags1
- Engine1
- Fuel/propulsion system1
- Power train1
- Visibility1
- Fuel system, gasoline1
- Exterior lighting1
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Nov 7, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
2
2
0
0
0
0
3
2
3
2
0
2
0
1
1
3
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2003 | 2 |
| 2004 | 2 |
| 2005 | 0 |
| 2006 | 0 |
| 2007 | 0 |
| 2008 | 0 |
| 2009 | 3 |
| 2010 | 2 |
| 2011 | 3 |
| 2012 | 2 |
| 2013 | 0 |
| 2014 | 2 |
| 2015 | 0 |
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 1 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Suspension
8 reports
“THIS CONCERN IS INVOLVING THE R1109 RECALL ISSUED BY INFINITI. 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.”
Structure
6 reports
“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?”
Service brakes, hydraulic
3 reports1 crash
“THERE IS A PULSING FEEL IN THE BRAKES. HAVE CHECKED ONLINE AND REALIZED THAT IT SEEMS TO BE A COMMON ENOUGH COMPLAINT BY OTHER OWNERS. ON HARD STOPS THE PUSH BACK BY THE PEDAL IS HARD ENOUGH THAT THE BRAKES LOCKUP INTERMITTENTLY. THIS IS DIFFERENT FROM THE PULSING FEEL OF THE ANTI-LOCK SYSTEM. IT FEELS AS THOUGH THE ROTORS ARE WARPED. IT IS FELT IN THE STEERING WHEEL ALSO, AND INCREASINGLY IN THE VEHICLE IN NORMAL DRIVING WITHOUT APPLYING THE BRAKES. IT IS NOT THE TIRES WHICH ARE FASTIDIOUSLY KEPT NEW OMI. NO INCIDENT YET BUT I BELIEVE THERE IS A TREND THAT NEEDS TO BE INVESTIGATED. *TR”
Steering
2 reports1 crash1 related recall
“TL*THE 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. ONE OF THE PASSENGERS ALSO SUSTAINED A DISLOCATED SHOULDER. THE VEHICLE WAS DESTROYED. THE VEHICLE WAS NOT TAKEN TO HAVE THE FAILURE DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE AND CURRENT MILEAGES WERE 95,000.”
Air bags
1 report3 related recalls
“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.”
Engine
1 report
“TL* THE CONTACT OWNS A 2003 INFINITI QX4. 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.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 7, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.