Water pump failure on the 2007 BMW X3 Sav
Only 5 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 water pump failure gets reported
There are 5 reports of water pump failure on the 2007 BMW X3 Sav, 5 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 100,000 miles. It is the 7th most-reported problem on this model year.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| — | — | 88,230 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 $500–$2,200 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 BMW X3 Sav
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.
Low coolant light came on, and bmw dealer found a crack on the water pump. Upon further inspection, the engine was noted to be canted, making it impossible to attach the new water pump. It was discovered that the engine mount bolts (total of 4 on one side) had all broken off, causing the engine to tilt. The repair was $2000 and when I called bmw usa, they said that there would be no compensation back to me, and that the broken bolts were secondary to the car having 90,000 miles. Changing bolts is not a normal wear and replacement item, and the car has never been in an accident. Our vehicles are gently driven, and never go off road, so I am mystified how this happened. *tr
4 motor mount bolts were sheered. Took to dealership due to coolant leak and found that engine had become unmounted and was sitting on water pump that was cracked and causing the leak. I had noticed vibration but was not sure what it was. Over $2000 repair bill. This seems to be a common problem with this model bmw. *tr
While driving on interstate 72 in illinois, we noted a low coolant level light. Checked the owner's manual, and it stated that this was not a major issue, but we should check it at the next opportunity. Coincidentally, the other party we were traveling with asked if we wanted to stop for coffee at a location 1.5 miles off the interstate. When we stopped, the low coolant light went off. Before getting back on the road, noticed that coolant was dripping from the front right side of the engine. A repair facility was nearby, and they investigated the leak and determined that it was emanating from a crack in the water pump. Also determined that the cause of the crack was the engine sagging. Further investigation determined that a lower engine mounting bolt was missing entirely. This was replaced along with the water pump, when the engine was jacked back into proper position. At this point it was discovered that the upper mounting bolts had sheared off inside the engine. This is a serious issue. We were one mounting bolt away from the engine sagging excessively, likely causing drive train seizure.
Also reported on the 2007 BMW X3 Sav
Other body or interior problem
Other powertrain problem
Airbag inflator rupture
Other electrical problem
Other engine problem
Overheating
How far this goes
This page is kept out of search results because 5 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 5 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 water pump failure happen on the 2007 BMW X3 Sav?
Across 5 owner reports that included an odometer reading, half were filed by 90,000 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 water pump failure on the 2007 BMW X3 Sav?
5 reports have been filed with NHTSA, about 0.2 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