2003 Infiniti Qx4: Reliability Data

Source: NHTSA — 25 complaints
25
Total Complaints
123,000mi
Median Mileage
SUSPENSION:FRONT
Top Issue
2
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

95,000 25th Percentile
123,000 Median Mileage
188,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

SUSPENSION:FRONT
3
SUSPENSION:FRONT:MACPHERSON STRUT
3
SUSPENSION
3
STRUCTURE:BODY
3
STRUCTURE
2
SERVICE BRAKES, HYDRAULIC
2
STEERING
2
VISIBILITY:POWER WINDOW DEVICES AND CONTROLS
1
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
1
STRUCTURE:FRAME AND MEMBERS
1

Severity Assessment

2
Crashes
0
Fires
4
Injuries
0
Deaths

Sample Complaint Reports

"WHILE DRIVING AT 35 MPH ON A DRY SINGLE LANE PAVED ROAD, I UNAVOIDABLY RAN MY INFINITI QX4 SUV OVER A TREE BRANCH IN THE ROAD. THE TREE BRANCH BRIEFLY BECAME ENTANGLED UNDER THE VEHICLE AND THEN WAS EXPELLED. ONCE THE TREE BRANCH WAS RELEASED, MY ABS LIGHT CAME ON. I TOOK MY VEHICLE TO MY INIFINI..."
"THERE WAS A SEVERE PULSATION IN THE REAR OF THE VEHICLE WHEN THE BRAKE WERE APPLIED. THE DEALERSHIP SERVICED THE VEHICLE OVER 20 TIMES. *JB"
"WHILE DRIVING MY 2003 INFINITI QX4 ON THE HIGHWAY, I NOTICED A SEVERE VIBRATION COMING FROM THE LEFT SIDE OF MY VEHICLE AND TIRE. I TOOK IT TO A LOCAL SERVICE REPAIR SHOP AND THEY TOOK OFF MY LEFT FRONT TIRE AND SAW WHERE MY INNER APRON WAS SEVERELY CORRODED, CRACKED AND PERFORATED.THEY STATED THEY..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28