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Infiniti QX4Model year report

2003 Infiniti QX4 Problems

Complaints
20filed with NHTSA
Median mileage
98,050miles, 15 complaints with mileage
Recalls
3campaigns on record
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA crash rating
—overall rating starts with 2011 models
EPA fuel economy
16 mpgcombined, 3.5L 6-cyl RWD · 14 city / 19 hwy

Sources: NHTSA records for the 2003 Infiniti QX4 (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error

NHTSA recorded 20 consumer complaints for the 2003 Infiniti QX4. The part named most often is suspension, with 8 complaints (40% of the total), followed by body and structure (6) and brakes (3). 15 of the complaints include a mileage, and 13% of those were filed for vehicles with under 50,000 miles; the median is 98,050 miles. Of all complaints, 2 involved a crash, 4 an injury, according to the filers. NHTSA lists 3 recall campaigns and 54 technical service bulletins for this model year. Suspension complaints overlap with 1 recall campaign and 4 technical service bulletins filed under the same part. Body and structure complaints overlap with 5 technical service bulletins filed under the same part.

This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Example complaints

Suspension: “The control arm is completely rusted away as the pathfinders that they recalled and is doing exactly as they have done...but there is no recall on the Infiniti I was wondering why those and not the Infiniti as we live in massachusetts and the salt does the same on this car now we have the death womble on this car”

NHTSA complaint #10955597, filed 2017-02, 200,000 miles

Body and structure: “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?”

NHTSA complaint #11102757, filed 2018-06, 204,000 miles

Brakes: “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 inifiniti dealer who put the vehicle on a lift. Examination showed no damage to the vehicle other than the wiring assembly to the front wheel sensor had its wire and electrical pin pulled from the electrical connector to the front wheel sensor. Abs for the vehicle was disabled.”

NHTSA complaint #10042958, filed 2003-10, 5,900 miles

Steering: “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.”

NHTSA complaint #10399646, filed 2011-05, 95,000 miles

Mileage when problems were reported

13% of the 15 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 95,000 and 149,000 miles.

13%0–100%10–250%25–5013%50–7527%75–10020%100–15027%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (15 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 98,050 miles.

Complaints by year filed

Trend: stable. Complaints filed in the last 3 full calendar years are within 25% of the 3 years before.

200320093201132014201732019
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Crash test ratings

NHTSA's 5-Star Safety Ratings for the 2003 Infiniti QX4. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.

VersionOverallFrontalSideSide poleRollover
QX4 · sedan not rated———3

Ratings before the 2011 model year come from an older, less demanding test and are not comparable with ratings for 2011 and later.

Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.

Fuel economy and running cost

EPA ratings for each 2003 Infiniti QX4 version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
QX4 2WD3.5L 6-cyl4-speed automatic141916$4,200
QX4 4WD3.5L 6-cyl4-speed automatic141815$4,450

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

Recall details for the 2003 Infiniti QX4 → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 54 on record; the latest 10 are shown.

See all 54 bulletins →

Other model years of the Infiniti QX4

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
20032098,0503—16—Stable
200237123,0005—15Not compared (before 2008)Stable
20017398,0004—15Not compared (before 2008)Falling
200028183,0003—15Not compared (before 2008)Rising
199943135,0002—15Not compared (before 2008)Falling
199829159,0002—15Not compared (before 2008)Stable
199745127,5002—15Not compared (before 2008)Stable

All Infiniti QX4 model years · Best and worst years by complaints

Frequently asked questions

How many NHTSA complaints does the 2003 Infiniti QX4 have?

NHTSA recorded 20 consumer complaints for the 2003 Infiniti QX4 as of Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2003 Infiniti QX4 is reported most often?

Suspension is named most often, in 8 complaints (40% of the total), followed by body and structure with 6.

Has the 2003 Infiniti QX4 been recalled?

NHTSA lists 3 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

What gas mileage does the 2003 Infiniti QX4 get?

The EPA rates the 2003 Infiniti QX4 (QX4 2WD, 3.5L 6-cyl) at 16 mpg combined, 14 city and 19 highway, with an estimated annual fuel cost of $4,200 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2003 Infiniti QX4 reported?

Among the 15 complaints that include a mileage, the median is 98,050 miles and the middle half falls between 95,000 and 149,000 miles; 13% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Crash ratings are from NHTSA’s New Car Assessment Program. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.