AUDI A5 (2021)
Running costs, common problems, and reliability data based on 768 real MOT tests in 2024.
MOT Pass Rate
92%
Total Tests (2024)
768
Avg Mileage
29,053 mi
Est. Annual Cost
£1,482
Is the 2021 AUDI A5 reliable?
Excellent reliability. Very few MOT failures. That's 10 points above the national average of 82%.
At 3 years old, 92% of AUDI A5s from 2021 passed their MOT first time in 2024. That's based on 768 tests across the UK. The average mileage at this age is 29,053 miles.
How does the 2021 AUDI A5 compare?
Mileage Analysis
The average 2021 AUDI A5 has 29,053 miles on the clock, which is above the expected 22,200 miles for a 3-year-old car. Higher-mileage cars often have more motorway miles, which is generally less harmful than stop-start urban driving.
How much does a 2021 AUDI A5 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 A5 by Year
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2021 | 92% | 768 | 29,053 mi |
| 2020 | 91% | 5,513 | 35,048 mi |
| 2019 | 90% | 22,290 | 43,034 mi |
| 2018 | 90% | 25,771 | 52,385 mi |
| 2017 | 89% | 33,531 | 63,247 mi |
| 2016 | 88% | 17,690 | 73,631 mi |
| 2015 | 87% | 22,720 | 82,750 mi |
| 2014 | 86% | 23,251 | 92,783 mi |
| 2013 | 85% | 23,409 | 98,721 mi |
| 2012 | 85% | 20,845 | 106,193 mi |
| 2011 | 83% | 21,339 | 112,687 mi |
| 2010 | 82% | 22,181 | 119,440 mi |
| 2009 | 82% | 13,400 | 125,967 mi |
| 2008 | 83% | 8,932 | 132,636 mi |
| 2007 | 82% | 3,222 | 141,630 mi |
Checking a specific AUDI A5?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 AUDI A5
The 2021 AUDI A5 is a premium with a 1968cc diesel engine. 768 of these vehicles were MOT tested in 2024, making it a less common model in the UK market. Among all cars from 2021, the average MOT pass rate is 92%, and this model falls short of that benchmark.
With an average of 29,053 miles at 3 years old, AUDI A5 owners cover more miles than the average driver.
2021 AUDI A5 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 A5?
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 92% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
AUDI A5 Reliability Trend
Newer AUDI A5s show better MOT pass rates than older ones, with an average improvement of 6 percentage points.
Buying a Used 2021 AUDI A5
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 A5
The AUDI A5 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 (-3%) from 93,803 tests
- FORD KUGA (2019) 91% pass rate (-1%) from 72,831 tests
- VOLKSWAGEN POLO (2019) 89% pass rate (-3%) from 65,751 tests
- FORD TRANSIT CUSTOM (2019) 87% pass rate (-5%) from 59,814 tests