AUDI A6 S LINE BLACK ED 40 TDI SA (2021)
Running costs, common problems, and reliability data based on 1,318 real MOT tests in 2024.
MOT Pass Rate
91%
Total Tests (2024)
1,318
Avg Mileage
35,513 mi
Est. Annual Cost
£1,482
Is the 2021 AUDI A6 S LINE BLACK ED 40 TDI SA reliable?
Excellent reliability. Very few MOT failures. That's 9 points above the national average of 82%.
At 3 years old, 91% of AUDI A6 S LINE BLACK ED 40 TDI SAs from 2021 passed their MOT first time in 2024. That's based on 1,318 tests across the UK. The average mileage at this age is 35,513 miles.
How does the 2021 AUDI A6 S LINE BLACK ED 40 TDI SA compare?
Mileage Analysis
The average 2021 AUDI A6 S LINE BLACK ED 40 TDI SA has 35,513 miles on the clock, which is well above the expected 22,200 miles for a 3-year-old car. Check service history carefully, as high-mileage cars need consistent maintenance to stay reliable.
Best year to buy a AUDI A6 S LINE BLACK ED 40 TDI SA?
The most reliable year is the 2020 model with a 94% MOT pass rate, while the 2021 model has the lowest at 91%. Consider a different year if reliability is a priority.
How much does a 2021 AUDI A6 S LINE BLACK ED 40 TDI SA 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 S LINE BLACK ED 40 TDI SA by Year
Checking a specific AUDI A6 S LINE BLACK ED 40 TDI SA?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 AUDI A6 S LINE BLACK ED 40 TDI SA
The 2021 AUDI A6 S LINE BLACK ED 40 TDI SA is a premium with a 1968cc diesel engine. 1,318 of these vehicles were MOT tested in 2024, making it a reasonably common sight on UK roads. Among all cars from 2021, the average MOT pass rate is 92%, and this model falls short of that benchmark.
With an average of 35,513 miles at 3 years old, AUDI A6 S LINE BLACK ED 40 TDI SA owners cover more miles than the average driver. High-mileage examples should be checked carefully for wear on suspension, brakes, and drivetrain components.
2021 AUDI A6 S LINE BLACK ED 40 TDI SA 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).
What does it cost to own a 2021 AUDI A6 S LINE BLACK ED 40 TDI SA?
Total estimated annual running cost is £1,482 (£124/month), broken down as £1037 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 91% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
AUDI A6 S LINE BLACK ED 40 TDI SA Reliability Trend
The AUDI A6 S LINE BLACK ED 40 TDI SA has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.
Buying a Used 2021 AUDI A6 S LINE BLACK ED 40 TDI SA
At 3 years old, this is still relatively fresh. You may find examples with remaining manufacturer warranty. Depreciation is slowing but hasn't bottomed out yet.
Alternatives to the 2021 AUDI A6 S LINE BLACK ED 40 TDI SA
The AUDI A6 S LINE BLACK ED 40 TDI SA is actually the most reliable option among similar diesel premiums from this era. Here are comparable diesel cars with similar engines:
- FORD FOCUS (2019) 89% pass rate (-2%) from 93,803 tests
- FORD KUGA (2019) 91% pass rate (same) from 72,831 tests
- VOLKSWAGEN POLO (2019) 89% pass rate (-2%) from 65,751 tests
- FORD TRANSIT CUSTOM (2019) 87% pass rate (-4%) from 59,814 tests