Radiator or coolant leak on the 2007 Mercury Mountaineer
Only 6 reports for this mode came with an odometer reading, which is too few for percentiles to mean anything. The page is here because someone linked to it; treat the figures as anecdotes, and see the full report for this year instead.
When radiator or coolant leak gets reported
There are 6 reports of radiator or coolant leak on the 2007 Mercury Mountaineer, 6 with a mileage attached. That is too few to place the failure on the odometer with any confidence.
A part like this is normally expected to survive 98,000 miles. It is the 4th most-reported problem on this model year.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| — | — | 60,500 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
Putting it right typically runs $350–$1,900 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, every year of the Mercury Mountaineer
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.
I have a 2007 mercury mountaineer with 42,000 miles on it and was notified by my dealership that there is a leak in the radiator and it needs to be replaced. My dealership told me this was common problem with mountaineers but ford will not stand behind the equipment. *tr
I am the owner of a 2007 mercury mountaineer. It has about 64,000 miles on it, most of them highway miles. I have a leak in my radiator. The dealer says it is a defect in the radiator, and no corrosion is present. It is out of warranty, so I must bear the cost of replacement of the radiator. Cost ~$700. I do not drive off road, so there is no valid reason the radiator should have failed. During an internet search, I discovered this is a common problem with 2006 and 2007 mercury mountaineers and ford explorers. This issue should be investigated, and ford held accountable for putting defective parts in their vehicles. *tr
Tl*the contact owns a 2007 mercury mountaineer. The dealer informed the contact the radiator needed to replaced. The vehicle was taken to the dealer who will repair the failure at the contacts expense. The dealer informed her there was no recalls or warranty on the vehicle. The manufacturer was contacted and offered no assistance. The failure mileage was 61,000. Updated 06/03/11 *bf the consumer stated one month later, the power steering pump had to be replaced. Updated 07/08/11
Also reported on the 2007 Mercury Mountaineer
Other body or interior problem
Other powertrain problem
Other electrical problem
Other speed control problem
Thermostat failure
Ignition switch, key fob or immobilizer failure
How far this goes
This page is kept out of search results because 6 reports is not enough to publish percentiles from. It stays reachable because somebody looking at this exact car would rather see the reports than be told there are none.
Complaints are voluntary, so 6 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 radiator or coolant leak happen on the 2007 Mercury Mountaineer?
Across 6 owner reports that included an odometer reading, half were filed by 60,000 miles. A quarter were filed before — and a quarter after —. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is radiator or coolant leak on the 2007 Mercury Mountaineer?
6 reports have been filed with NHTSA, about 286 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