2002 Infiniti Qx4 at 121,500 miles
You did not give a mileage, so this uses 121,500 — the median reported failure mileage for this model year, which is a rough stand-in for “a typical example of this car”. Put your real reading in the box below for an answer about your car.
At 121,500 miles on this car
At 121,500 miles on a 2002 Infiniti Qx4, 11 of the failure modes other owners have reported already have their median report at or below your reading, and 0 more fall inside the window where they are usually reported. The heaviest of the ones already due is loss of braking.
Already past the median 11
Half of all reports of these failures came in at or below where your car is now.
- Loss of braking 56k
- Seat belt or retractor failure 30k
- Other speed control problem 120k
- ABS module or sensor failure 89k
- Catalytic converter failure 12k
- Other engine problem 122k
- Other steering problem 117k
- Complete transmission failure 5k
- Fuel tank, filler or EVAP failure 100k
- Other powertrain problem 120k
- Other wheel or tire problem 111k
You are in the window 0
Your reading falls inside the middle half of reports for these.
Nothing here.
Typically later 9
Reported further down the road than where you are.
- Strut, shock or spring failure 124k
- Other electrical problem 125k
- Control module (ECM/PCM/BCM) failure 127k
- Airbag failed to deploy in a crash 137k
- Steering column or shaft failure 140k
- Other suspension problem 146k
- Other body or interior problem 146k
- Control arm, ball joint or bushing failure 165k
- Other fuel system problem 195k
Timing unknown 5
Reported, but too few owners gave an odometer reading to place them.
- Rust or structural corrosion 3×
- Steering rack, gear or tie rod failure 2×
- Headlight failure or clouding 1×
- Tail light, brake light or signal failure 1×
- Other brake problem 1×
Why the list is generic until you type a number
Every figure below is a comparison against your odometer, so with no reading given the page has to pick one: 121,500 miles, roughly what a 2002 car covers at 12,000 miles a year. A reading 30,000 miles either side of that moves failures between the columns, which is the difference between a useful list and a generic one.
Already inside the reported range
11 failure modes on the 2002 Infiniti Qx4 have a median reported mileage at or below 121,500: loss of braking (median 55,000 miles, 3 reports), seat belt or retractor failure (median 30,000 miles, 3 reports), other speed control problem (median 120,000 miles, 3 reports), ABS module or sensor failure (median 90,000 miles, 2 reports), catalytic converter failure (median 10,000 miles, 2 reports) and other engine problem (median 120,000 miles, 2 reports).
Half the owners who reported each of these had done so by that mileage, which means half had not. A failure being "due" here is a statement about other people's cars, and the useful response is an inspection rather than a pre-emptive repair.
Still ahead of you
9 further modes sit above your reading, the nearest being strut, shock or spring failure at a median of 125,000 miles. On a car you intend to keep, these are the ones that decide whether it is worth keeping.
What this list is not
It is a reading of what owners of other 2002 Infiniti Qx4s reported, and at what odometer reading they reported it. It is not a maintenance schedule, not a diagnosis, and not a prediction about this car: two identical cars with different service histories are not the same car.
Complaints are filed voluntarily, mileages are typed in by owners and cluster on round numbers, and a failure mode with few reports has a wide window even when the median looks precise. Modes with fewer than 8 dated reports are shown without percentiles for that reason.
Where 121,500 miles falls on the curve
The three columns above sort the failure modes one by one. This is the same evidence in aggregate: every dated report on this model year, stacked up in the order the odometer readings arrived. The dashed line marked you is where your car sits. How much of the line is to the left of that mark is how much of this model year's reported trouble is, on the evidence, already behind you.
About 42% of the dated reports on this model year had already been filed by 121,500 miles. That is the share of the problems that show up in this record, not of the problems this car will have.
- Line share of reports filed by that mileage
- Dashed the mileages called out above
A steep early climb means a car whose reports cluster young, which is the pattern of a defect rather than of wear. A line that only gets going past six figures is the opposite. Neither shape says anything about the specific car in your driveway, and a curve built from a few dozen readings can be moved by one owner with a talkative afternoon.
Full report for the 2002 Infiniti Qx4 Compare with another car
Questions this page answers
What should I expect at 121,500 miles on a 2002 Infiniti Qx4?
11 of the failure modes owners have reported on the 2002 Infiniti Qx4 have a median report at or below 121,500 miles, and 0 more fall inside the mileage window where they are usually reported. That is a watch list drawn from other owners, not a prediction about this car.
How to use the three columns. The left column is the list to hand a mechanic before you buy, and to check the service history for if you already own the car. The middle column is what to budget for this year. The right column is not a reprieve — it is a reminder that a used car has a bill schedule, and this is roughly where it falls. All of it is drawn from 54 owner complaints about this exact model year, not from a maintenance manual. How the percentiles are computed.
Source Owner complaints and recall records published by the US National Highway Traffic Safety Administration, model years 1996–2027 Figures rebuilt Published by AtWhatMileage How every figure is computed