Other powertrain problem on the 2007 Mercury Mountaineer
2 crashes 2 of the 17 reports for this failure mention a crash, a fire, an injury or a death. Those are the owner's words on the complaint form, not a verified finding, and one report can mention more than one.
When other powertrain problem gets reported
Owners of the 2007 Mercury Mountaineer report other powertrain problem at a median of 65,000 miles. A quarter of the reports come in before 35,000 miles and a quarter after 105,000 miles, from 15 reports that carried an odometer reading.
A part like this is normally expected to survive 92,000 miles. It is the 2nd most-reported problem on this model year.
The mileage distribution
The reported range runs from 15,000 miles at the tenth percentile to 135,000 miles at the ninetieth, a spread of 121,200 miles across the middle 80% of reports.
A spread this wide points at use rather than design. Towing, climate, service history and city mileage all move a failure like this, so the median is a weak guide to any individual car.
27% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 13,000 miles | 35,000 miles | 67,000 miles | 106,153 miles | 134,200 miles |
Read the 10th percentile as “one report in ten arrived this early”. Exact figures are shown in this table because it is the table of record; everywhere else on the site they are rounded to the precision the sample can carry.
What a percentile can and cannot tell you here
These five numbers describe the readings owners gave, in order. The median is the middle one: half the reports arrived below it. The 10th and 90th are the edges of the bulk of the distribution, and the distance between them is the part worth reading. A tight spread — say 70,000 to 95,000 miles — points at something that wears out on a schedule, and the schedule is knowable. A wide one, 20,000 to 190,000, points at a fault that hits some cars and never troubles others, which means the mileage on the listing in front of you tells you very little about your odds.
What these figures are not is a survival curve. Every reading here comes from a car whose owner filed a complaint, so the sample contains only failures: it cannot say what share of the fleet made it past 150,000 miles untouched, because those owners had nothing to report. Nor is the mileage the moment of failure — it is the odometer reading as recalled at the time of filing, which may be weeks later and is sometimes rounded to the nearest ten thousand by the person typing it.
Percentiles are shown at all only once 8 readings exist for the vehicle and mode. Below that the middle of a handful of numbers is noise wearing a decimal point, so the figures are withheld rather than dressed up.
What happens, and what it costs
Of these reports, 2 a crash is mentioned. Owners write their own complaints and the agency does not verify them, so read this as what the reports say happened rather than as a confirmed count.
Putting it right typically runs $400–$4,500 at an independent US shop. That range is an editorial estimate held in this site's failure-mode catalogue, not a figure from NHTSA, and it is a repair cost rather than a diagnosis cost.
The same failure on other years
The same failure is reported on 11 model years of this car. It shows up earliest on the 2008, at a median of 40,000 miles, and latest on the 1999 at 130,000 miles.
By volume the 2002 carries the most reports, with 81; the 2007 has 17. A mode that appears across most years of a model is usually a design choice rather than a bad batch.
If one year stands out to the left, that is the year to avoid; if the whole line sits at a similar mileage, this is wear rather than a defect in one production run.
Tick median reported mileage Solid middle half of reports Faint 10th to 90th percentile Colour how bad the failure is when it happens
What owners wrote
Verbatim from NHTSA complaint narratives, trimmed for length. The mileage is the one the owner gave.
Tl*the contact owns a 2007 mercury mountaineer. The transmission made noises when downshifting at 15 MPH or when starting the vehicle. The dealer reprogrammed the vehicle. The contact took the vehicle home, but the failure worsened. The transmission continued to slip. She returned to the dealer and left the vehicle there for a few days. A new computer part was placed in the vehicle, but the failure still persists. There is no repair for the failure. The failure mileage was 9,000 and current mileage was 9,500.
Transmission jukes ahead while traveling on long distances and short. When I let off of brake pedal it lounges forward. It has gotten worse in 2months time. I brought it to the dealer which in turn told me I must wait for a recall per ford motor co. I feel this is nonsense being this matter is getting worse!!! What, I have to wait for my vehicle to die before I can get something done about it?!!! Bullcrap! Thanks teresa *tr
Transmission hard downshift when stopping or in slow traffic. Vehicle surges almost "leaps" forward while at a stop when foot taken off of brake pedal. Almost hit vehicle in front. Another mountaineer owner refers to it as a "bump stop". This occurs daily although not every time the vehicle stops or slows. The is very unnerving in stop & go traffic as you have to keep your foot on the brake and leave a large space between the vehicle in front to avoid rear ending the other vehicle. Took vehicle to aamco as our ford dealership is deplorable, aamco could not detect any defects. Vehicle has 19,000 miles and is still under factory warranty. *tr
Also reported on the 2007 Mercury Mountaineer
Other body or interior problem
Other electrical problem
Radiator or coolant leak
Other speed control problem
Thermostat failure
Ignition switch, key fob or immobilizer failure
How far this goes
Complaints are voluntary, so 17 is a floor and not a count of affected cars. Mileages are typed in by owners and cluster on round numbers. And the mode itself is assigned by software reading the complaint text, which is reliable in bulk and fallible one report at a time.
Questions this page answers
At what mileage does other powertrain problem happen on the 2007 Mercury Mountaineer?
Across 15 owner reports that included an odometer reading, half were filed by 65,000 miles. A quarter were filed before 35,000 miles and a quarter after 105,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is other powertrain problem on the 2007 Mercury Mountaineer?
17 reports have been filed with NHTSA, about 810 per 1,000 vehicles. Complaints are voluntary, so this is a floor rather than a count of affected cars.
What this is and is not. These are the mileages at which owners chose to complain to a federal agency, which is not the same as the mileage at which the part fails on every car. It skews toward failures that happened outside warranty, cost real money, or frightened someone. It is still the only public dataset that carries failure mileage at all, and the shape of a few hundred readings is informative even when a single one is not. Methodology · JSON · this failure on other cars
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