Radiator or coolant leak on the 2003 Volkswagen Jetta
1 fire 1 of the 4 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.
Only 4 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 4 reports of radiator or coolant leak on the 2003 Volkswagen Jetta, 4 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 23rd most-reported problem on this model year.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| — | — | 92,921 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 fire 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 $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 12 model years of this car. It shows up earliest on the 2015, at a median of 15,000 miles, and latest on the 2000 at 105,000 miles.
By volume the 2002 carries the most reports, with 7; the 2003 has 4. 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.
I have a 2003 volkswagen jetta tdi gls. I should note that this vehicle has been faithfully serviced by the dealer following the maintenance schedule listed in the user manual. The vehicle currently has 109,000 miles. While driving the vehicle a few days before the incident date listed on this complaint, the A/C ceased to function properly. There was no cool air coming out of the vents. Also, when the vehicle was shutdown, the radiator fans would continue to run upwards of 15 minutes. Neither event has occurred before. I brought my vehicle in to a vw dealership on the incident date to have its normal 110,000 mile service and to have the issues (noted above) diagnosed. I received a call from the dealership later in the day on the incident date stating that a failure in the coolant level sensor caused coolant fluid to be wicked into the vehicle's wiring harness leading to contamination / corrosion of the engine and body harness. The quote to repair was approximately $6,000. This problem is a latent defect in the design. The service department told me that the vehicle was un-drivable until the repairs are made. The service advisor…
I have a 2003 volkswagen jetta tdi gls. I should note that this vehicle has been faithfully serviced by the dealer following the maintenance schedule listed in the user manual. The vehicle currently has 109,000 miles. While driving the vehicle a few days before the incident date listed on this complaint, the A/C ceased to function properly. There was no cool air coming out of the vents. Also, when the vehicle was shutdown, the radiator fans would continue to run upwards of 15 minutes. Neither event has occurred before. I brought my vehicle in to a vw dealership on the incident date to have its normal 110,000 mile service and to have the issues (noted above) diagnosed. I received a call from the dealership later in the day on the incident date stating that a failure in the coolant level sensor caused coolant fluid to be wicked into the vehicle's wiring harness leading to contamination / corrosion of the engine and body harness. The quote to repair was approximately $6,000. This problem is a latent defect in the design. The service department told me that the vehicle was un-drivable until the repairs are made. The service advisor…
I am a resident of south florida and in the summer of 2007 , due to the fact my car has been reliable I decided to drive cross country to los angeles , I took all precautions prior to living, from oil changes , brakes , tire rotation and so forth. In oct. Of 2007 , I was in a fender bender in los angeles , which delayed my return to south florida in the accident they had to replace front end lights as well as my radiator. I once again took all precautions on the vehicle prior to my journey. As of mid november I was back in miami , no problems with the car , all is good at that point the vehicle had approximately 72,000 or so . In mid march I noticed that when I started my car and try to accelerate the car , it would not surpass 15/20mph and it made a very strange sound. It would only function appropriately when the engine was @ 190. I have taken it to a dealership as well as another mechanic and they both have informed me that my clutch is worn out. I'm not sure why that is? I have done everything in my power to keep this car up to par , as far as maintenance . The dealer quoted me $5600 and the other mechanic $2500. This vehicle…
Also reported on the 2003 Volkswagen Jetta
Other body or interior problem
Other powertrain problem
Other electrical problem
Other engine problem
Overheating
Misfire or rough idle
How far this goes
This page is kept out of search results because 4 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 4 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 2003 Volkswagen Jetta?
Across 4 owner reports that included an odometer reading, half were filed by 95,000 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 2003 Volkswagen Jetta?
4 reports have been filed with NHTSA, about 0.3 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