AUDI A6 (2015)
Running costs, common problems, and reliability data based on 22,966 real MOT tests in 2024.
MOT Pass Rate
89%
Total Tests (2024)
22,966
Avg Mileage
96,950 mi
Est. Annual Cost
£1,577
Is the 2015 AUDI A6 reliable?
Good reliability. Occasional issues but generally solid. That's 7 points above the national average of 82%.
At 9 years old, 89% of AUDI A6s from 2015 passed their MOT first time in 2024. That's based on 22,966 tests across the UK. The average mileage at this age is 96,950 miles.
How does the 2015 AUDI A6 compare?
Mileage Analysis
The average 2015 AUDI A6 has 96,950 miles on the clock, which is above the expected 66,600 miles for a 9-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
Best year to buy a AUDI A6?
The most reliable year is the 2020 model with a 94% MOT pass rate, while the 1997 model has the lowest at 71%. The 2015 sits between the two at 89%.
How much does a 2015 AUDI A6 cost to run?
Based on 7,400 miles/year (UK average), current fuel prices, and repair likelihood from MOT pass rate data. Insurance not included.
AUDI A6 by Year
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2021 | 93% | 2,105 | 36,146 mi |
| 2020 | 94% | 3,470 | 42,761 mi |
| 2019 | 92% | 16,657 | 54,594 mi |
| 2018 | 92% | 16,546 | 62,634 mi |
| 2017 | 91% | 19,296 | 75,408 mi |
| 2016 | 89% | 26,437 | 85,249 mi |
| 2015 | 89% | 22,966 | 96,950 mi |
| 2014 | 88% | 21,808 | 106,355 mi |
| 2013 | 87% | 20,882 | 115,551 mi |
| 2012 | 86% | 16,143 | 125,550 mi |
| 2011 | 82% | 13,126 | 135,985 mi |
| 2010 | 81% | 12,471 | 143,668 mi |
| 2009 | 81% | 8,341 | 150,654 mi |
| 2008 | 80% | 11,124 | 156,627 mi |
| 2007 | 79% | 10,782 | 162,839 mi |
| 2006 | 78% | 6,542 | 165,663 mi |
| 2005 | 78% | 3,534 | 163,283 mi |
| 2004 | 75% | 2,156 | 155,383 mi |
| 2003 | 74% | 1,408 | 153,657 mi |
| 2002 | 73% | 771 | 164,916 mi |
| 2001 | 78% | 356 | 157,216 mi |
| 2000 | 75% | 389 | 150,802 mi |
| 1999 | 73% | 410 | 157,368 mi |
| 1998 | 76% | 222 | 151,701 mi |
| 1997 | 71% | 215 | 176,094 mi |
| 1996 | 78% | 316 | 189,126 mi |
| 1995 | 76% | 136 | 162,842 mi |
| 1994 | 81% | 53 | 140,857 mi |
Checking a specific AUDI A6?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2015 AUDI A6
The 2015 AUDI A6 is a premium with a 1968cc diesel engine. 22,966 of these vehicles were MOT tested in 2024, making it one of the most commonly tested cars on UK roads. Among all cars from 2015, the average MOT pass rate is 83%, and this model beats that benchmark.
With an average of 96,950 miles at 9 years old, AUDI A6 owners cover more miles than the average driver.
2015 AUDI A6 Fuel Costs
The 1968cc diesel engine offers a reasonable balance between performance and economy. Expect around 48 mpg in mixed driving, which works out to roughly £1,037 per year at current diesel prices of 148p per litre (based on 7,400 miles per year). Diesel cars of this age should have their DPF (diesel particulate filter) checked, as replacements can be costly.
What does it cost to own a 2015 AUDI A6?
Total estimated annual running cost is £1,577 (£131/month), broken down as £1037 fuel, £135 road tax, £55 MOT, and £350 predicted repairs. Repair costs are moderate, reflecting the 89% pass rate. Keeping on top of servicing will help avoid surprises.
AUDI A6 Reliability Trend
Newer AUDI A6s show better MOT pass rates than older ones, with an average improvement of 11 percentage points.
Buying a Used 2015 AUDI A6
At 9 years old, this is a solid used buy if you find one with good service history. Depreciation has levelled off, so you won't lose much more value. Focus on condition over mileage. If you're flexible on year, the 2020 model has the highest pass rate at 94%. With 22,966 MOT tests in our data, there's strong statistical confidence in these figures.
Alternatives to the 2015 AUDI A6
If reliability is your priority, there's one similar car with a higher MOT pass rate. Here are comparable diesel cars with similar engines:
- VOLKSWAGEN GOLF (2017) 91% pass rate (+2%) from 127,682 tests
- VAUXHALL ASTRA (2013) 79% pass rate (-10%) from 101,969 tests
- AUDI A3 (2015) 88% pass rate (-1%) from 80,797 tests
- FORD TRANSIT (2017) 81% pass rate (-8%) from 80,031 tests