Overheating on the 2005 MINI Cooper S
1 crash 4 fires 5 of the 9 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 overheating gets reported
Owners of the 2005 MINI Cooper S report overheating at a median of 70,000 miles. A quarter of the reports come in before 60,000 miles and a quarter after 85,000 miles, from 8 reports that carried an odometer reading.
A part like this is normally expected to survive 102,000 miles. It is the 7th most-reported problem on this model year.
The mileage distribution
The reported range runs from 60,000 miles at the tenth percentile to 95,000 miles at the ninetieth, a spread of 35,297 miles across the middle 80% of reports.
A window that narrow is the signature of a part that fails on its own schedule rather than on how the car is driven — which is usually a design or supplier problem rather than wear and tear.
0% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 59,930 miles | 59,930 miles | 70,000 miles | 83,563 miles | 95,227 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, 1 a crash and 4 a fire are 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–$3,500 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 3 model years of this car. It shows up earliest on the 2008, at a median of 30,000 miles, and latest on the 2003 at 80,000 miles.
By volume the 2005 is the worst of them, which makes this a problem of this specific year rather than of the model as a whole.
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.
The power steering suddenly went out on my 2005 mini cooper s as I was about to turn right onto a highway on ramp. I felt the lack of power and continued straight so I could pull into a service station up ahead. The power steering was intermittent for a bit then totally out, leaving me with a 45 minute drive down the mountains to home without power steering. I have had multiple incidents of the power steering fan running after the car was off. Now it looks as if the fan is no longer cooling the pump causing it to overheat which could start a fire. I am planning to try to replace the fan soon but I am just a broke college student so I really hope this recall goes through. *tr
I had to replace the power steering pump as it had failed. It first failed while I was on a highway off-ramp and nearly crashed. The failure was due to the power steering fan seizing and therefore it was not cooling the power steering pump. After some investigation of my own, I found out that the root cause of this problem was the low fan speed resistor failed on the engine cooling fan. The power steering fan will only activate once the engine cooling fan is running. If the low fan speed relay fails, the engine cooling fan will only turn on at 233f (high speed fan minimum temperature). Once the engine cooling fan turns on at 233f, the power steering fan will turn on to cool the power steering pump. The power steering fan will be too hot at this point and will overheat itself and seize. The power steering fan failure then causes the power steering pump to overheat and fail. If the power steering fan is not replaced before the power steering pump fails, this causes the entire hydraulic system for the power steering system to fail as well and leak hydraulic fluid. If the power steering system fails, this can cause the power steering…
Vehicle fire 5/2/2012. Car parked for 4 hrs. Returned to car & drove it <50 yards for ~2 minutes (moved it from street to parking lot). Turned it off and went in store. Returned ~4 minutes later, noticed smoke/exhaust smell; presumed it was adjacent car. Unlocked car. Car would't start (no lights/electrical at all). I then noticed white smoke coming from hood. Opened hood then noticed flame/fire inside engine compartment. Went in store, got fire extinguisher and put fire out. Invoice was >$3500 from mini dealer. The dealer's assessment: "verified power steering pump has overheated to the point where it has burned up internally as well as externally (melting all three connectors and the wiring leading to them). Inspected power steering cooling fan and verified cooling fan is seizing up which very likely LED to the overheating and eventual failure of the power steering pump. Removed engine compartment fuse box to examine megafuse powering the power steering pump, fuse is intact and did not burn up. Inspected power steering pressure hose and it appears the rubber section of the power steering pressure line was subjected to the…
Also reported on the 2005 MINI Cooper S
Other steering problem
Power steering pump or fluid leak
Airbag warning light or occupant sensor fault
Loss of power steering
Seat belt or retractor failure
Cooling fan failure
How far this goes
Complaints are voluntary, so 9 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 overheating happen on the 2005 MINI Cooper S?
Across 8 owner reports that included an odometer reading, half were filed by 70,000 miles. A quarter were filed before 60,000 miles and a quarter after 85,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is overheating on the 2005 MINI Cooper S?
9 reports have been filed with NHTSA, about 0.8 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