Radiator or coolant leak on the 2002 Porsche 911 Turbo
Only 1 report 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 1 report of radiator or coolant leak on the 2002 Porsche 911 Turbo, 1 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 |
|---|---|---|---|---|
| — | — | 36,645 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 on other years
The same failure is reported on 3 model years of this car. It shows up earliest on the 2007, at a median of 40,000 miles, and latest on the 2001 at 75,000 miles.
By volume the 2007 carries the most reports, with 12; the 2002 has 0. 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.
Over time I noticed a coolant smell from the car whenever I would drive it with the windows down, especially when the car was in stop and go traffic. I then noticed a small puddle of fluid under the engine after the car was parked. I took the car to the service and was told the coolant pipe on the engine was loose and coolant was beginning to drip from the junction where the pipe attaches to the engine block. After some internet research, I learned that the coolant pipes are glued into the engine block and over time there is a tendency for the glue to deteriorate and the pipes to come loose in turn causing a major coolant leak in the area of the engine and rear tires. If coolant were to leak onto the rear tires, this could cause a major accident due to loss of traction of the rear tires leading to loss of control of the vehicle. I elected to have the engine removed and all 8 the coolant pipes permanently welded instead of glued as this is the only permanent and safe solution. I am appalled that porsche would choose to glue coolant fitting on the engine when a failure could cause and accident. *tr
Also reported on the 2002 Porsche 911 Turbo
Other engine problem
Water pump failure
Alternator or charging system failure
Other powertrain problem
Other fuel system problem
Other steering problem
How far this goes
This page is kept out of search results because 1 report 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 1 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 2002 Porsche 911 Turbo?
Across 1 owner reports that included an odometer reading, half were filed by 35,000 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 2002 Porsche 911 Turbo?
1 reports have been filed with NHTSA, about 48 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