Audi S6
From 332 MOT tests. Above average for its class.
Common MOT failure categories
What goes wrong?
The most common MOT failure reasons are a suspension pin, bush or joint excessively worn, tyre tread depth not in accordance with the requirements and lambda coefficient outside the default limits or the range specified by the manufacturer. The top issue, a suspension pin, bush or joint excessively worn, caused 13 failures in 2024. Checking tread depth (1.6mm legal minimum, 3mm recommended) before your test can save an unnecessary fail. You can check prices at Black Circles if you need replacements. If you need repairs before retesting, sites like BookMyGarage let you compare local prices.
| a suspension pin, bush or joint excessively worn | 13 |
| tyre tread depth not in accordance with the requirements | 12 |
| lambda coefficient outside the default limits or the range specified by the manufacturer | 7 |
| a transmission shaft constant velocity joint boot severely deteriorated | 5 |
| lamp emitted colour, position or intensity not in accordance with the requirements | 5 |
| a tyre cords visible or damaged | 5 |
| an srs malfunction indicator lamp (mil) indicates a system malfunction | 5 |
| a direction indicator lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning | 5 |
| a rear registration plate lamp or light source missing or inoperative in the case of multiple lamps or light sources | 4 |
| exhaust system leaking or insecure | 4 |
How serious are these failures?
Not all MOT failures are equal. 41.5% of failures are serious: 35.4% are safety issues (brakes, steering, tyre damage) and 6.2% could actually leave you stranded. That's close to the 44.4% average across all models. When it does fail, the average repair bill is around £115.
Audi S6 on UK roads
The fleet is growing: 277 newly registered in the past year with 32 leaving, a net gain of 245. Currently at its highest numbers ever.
Quarterly breakdown
| Quarter | On road | SORN | New | Gone | Net |
|---|---|---|---|---|---|
| 2025 Q3 | 1,688 | 341 | +58 | -0 | +64 |
| 2025 Q2 | 1,615 | 350 | +71 | -11 | +60 |
| 2025 Q1 | 1,561 | 344 | +98 | -21 | +77 |
| 2024 Q4 | 1,509 | 319 | +50 | -0 | +52 |
| 2024 Q3 | 1,462 | 314 | +35 | -17 | +18 |
| 2024 Q2 | 1,438 | 320 | +26 | -21 | +5 |
| 2024 Q1 | 1,434 | 319 | +15 | -23 | -8 |
| 2023 Q4 | 1,450 | 311 | +13 | -0 | +20 |
10 variants on the road
| Variant | Fuel | Licensed | Share |
|---|---|---|---|
| S6 V8T Tfsi Quattro S-A | Petrol | 285 | 19% |
| S6 Black Ed Tfsi Quattro S-A | Petrol | 242 | 16% |
| S6 Black Ed Tdi Mhev Quattro A | Diesel | 236 | 15% |
| S6 V8T Tfsi Quattro Auto | Petrol | 203 | 13% |
| S6 Tdi Quattro Auto | Diesel | 162 | 11% |
| S6 V10 Auto | Petrol | 128 | 8% |
| S6 E-Tron Edition 1 Quattro | Battery Electric | 106 | 7% |
| S6 Quattro Auto | Petrol | 71 | 5% |
| S6 | Diesel | 56 | 4% |
| S6 Vorsprung Tdi Mhev Quat A | Diesel | 51 | 3% |
Source: DfT vehicle licensing statistics, 2025 Q3. Crown copyright, OGL v3.0.
Typical mileage
Half of all S6s tested had between 77,931 and 128,820 miles on the clock. A significant number are high-mileage vehicles.
At 103,711 median miles, the S6 has 0.012 failures per 10,000 miles driven.
Other Audi models
Common questions
What is the Audi S6 MOT pass rate?
The Audi S6 has a 87.7% MOT pass rate based on 332 real MOT tests. This is above the national average.
What are common MOT failures on a Audi S6?
The most common MOT failure on the Audi S6 is a suspension pin, bush or joint excessively worn, which caused 13 failures. Other common issues include tyre tread depth not in accordance with the requirements.
How many Audi S6s are on UK roads?
There are 1,688 Audi S6s currently licensed on UK roads, with 341 on SORN.
What is the typical mileage of a Audi S6 at MOT?
The median mileage at MOT for a Audi S6 is 103,711 miles. The middle 50% of vehicles tested have between 77,931 and 128,820 miles.
Buying a used S6?
Start with the free tools. Look up the specific vehicle's MOT history on GOV.UK The mileage at each test will show if it's been wound back, and the advisory history tells you what's wearing. Cross-reference that against the typical failures above to see if anything looks unusual for this model.
The free data won't tell you about outstanding finance, theft markers, or write-off history. For that, you need a vehicle history check This is especially important on a private sale where you have fewer legal protections.
Some links are to services we may earn from. Disclosure.
MOT data from DVSA anonymised test results, 2024 test year. Fleet data from DfT vehicle licensing statistics. Crown copyright, OGL v3.0. MOT pass rates are statistical summaries of test outcomes, not assessments of individual vehicle safety or condition. Always inspect a vehicle and check its full MOT history before purchasing. See terms of use.