Complete engine failure or seizure on the 2004 Audi A4
Only 3 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 complete engine failure or seizure gets reported
There are 3 reports of complete engine failure or seizure on the 2004 Audi A4, 3 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 105,000 miles. It is the 18th most-reported problem on this model year.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| — | — | 98,000 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 $4,500–$12,000 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.
This mode is classified as critical, which means a failure can leave the car unable to stop, steer, or stay out of the way of traffic. It is weighted accordingly in the risk score.
The same failure on other years
The same failure is reported on 4 model years of this car. It shows up earliest on the 2009, at a median of 90,000 miles, and latest on the 2010 at 100,000 miles.
By volume the 2010 carries the most reports, with 5; the 2004 has 3. 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 owned my 2004 audi a4 1.8t quattro for four years. The problem that I am having is a massive issue that hundreds if not thousands of other b6 platform owners also have, the water pump in our vehicles is very prone to failure. The water pump found in our us market vehicles has a plastic impeller that is known to snap, crack, or leak causing the part to fail. I have had two of these pumps fail in the past two years. The first one failed at around 74k in july of 2008 when the part was nearing it's replacement date. The second failure occurred in january 2010 at roughly 98k miles. So I have had two failures in a very short time period. Now audi is fully aware of this but has never had a recall or even acknowledges that it is their fault for releasing a poorly designed part. When a pump fails it usually goes very quickly. In my case it leaked and then I lost AC compression. I am lucky that I know cars and knew to immediately park the car and get it into the shop. I know that many other people have had significant engine damage because the failed pump caused overheating. The pump is also part of the whole system that drives the…
I have owned my 2004 audi a4 1.8t quattro for four years. The problem that I am having is a massive issue that hundreds if not thousands of other b6 platform owners also have, the water pump in our vehicles is very prone to failure. The water pump found in our us market vehicles has a plastic impeller that is known to snap, crack, or leak causing the part to fail. I have had two of these pumps fail in the past two years. The first one failed at around 74k in july of 2008 when the part was nearing it's replacement date. The second failure occurred in january 2010 at roughly 98k miles. So I have had two failures in a very short time period. Now audi is fully aware of this but has never had a recall or even acknowledges that it is their fault for releasing a poorly designed part. When a pump fails it usually goes very quickly. In my case it leaked and then I lost AC compression. I am lucky that I know cars and knew to immediately park the car and get it into the shop. I know that many other people have had significant engine damage because the failed pump caused overheating. The pump is also part of the whole system that drives the…
Tl* the contact owns a 2004 audi a4. The contact stated that a week after having the oil changed, coolant flange replaced and the readiness codes reset the engine seized. The vehicle was towed to the dealer who diagnose that the engine needed to be replaced. The technician explained that the engine failure was not due to the repairs that were previously performed on the vehicle. The failure and current mileage was 104,000.
Also reported on the 2004 Audi A4
Fuel pump failure
Other wheel or tire problem
Other engine problem
Airbag warning light or occupant sensor fault
Headlight failure or clouding
Other speed control problem
How far this goes
This page is kept out of search results because 3 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 3 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 complete engine failure or seizure happen on the 2004 Audi A4?
Across 3 owner reports that included an odometer reading, half were filed by 100,000 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 complete engine failure or seizure on the 2004 Audi A4?
3 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