AUDI A4 (2020)
Running costs, common problems, and reliability data based on 13,420 real MOT tests in 2024.
MOT Pass Rate
92%
Total Tests (2024)
13,420
Avg Mileage
39,596 mi
Est. Annual Cost
£1,482
Is the 2020 AUDI A4 reliable?
Excellent reliability. Very few MOT failures. That's 10 points above the national average of 82%.
At 4 years old, 92% of AUDI A4s from 2020 passed their MOT first time in 2024. That's based on 13,420 tests across the UK. The average mileage at this age is 39,596 miles.
How does the 2020 AUDI A4 compare?
Mileage Analysis
The average 2020 AUDI A4 has 39,596 miles on the clock, which is above the expected 29,600 miles for a 4-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 A4?
The most reliable year is the 2021 model with a 96% MOT pass rate, while the 1995 model has the lowest at 61%. The 2020 sits between the two at 92%.
How much does a 2020 AUDI A4 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 A4 by Year
| Year | Pass Rate | Tests | Avg Mileage |
|---|---|---|---|
| 2021 | 96% | 531 | 25,826 mi |
| 2020 | 92% | 13,420 | 39,596 mi |
| 2019 | 91% | 25,771 | 48,333 mi |
| 2018 | 89% | 27,431 | 57,063 mi |
| 2017 | 88% | 41,848 | 70,662 mi |
| 2016 | 85% | 41,258 | 82,779 mi |
| 2015 | 85% | 31,961 | 92,608 mi |
| 2014 | 84% | 33,458 | 102,945 mi |
| 2013 | 84% | 32,559 | 109,938 mi |
| 2012 | 83% | 26,765 | 120,869 mi |
| 2011 | 82% | 26,901 | 130,117 mi |
| 2010 | 80% | 25,855 | 136,452 mi |
| 2009 | 79% | 26,384 | 138,021 mi |
| 2008 | 78% | 31,415 | 137,710 mi |
| 2007 | 77% | 30,996 | 136,433 mi |
| 2006 | 76% | 26,758 | 137,214 mi |
| 2005 | 75% | 15,245 | 139,515 mi |
| 2004 | 74% | 12,946 | 146,260 mi |
| 2003 | 74% | 7,402 | 148,576 mi |
| 2002 | 72% | 3,944 | 156,746 mi |
| 2001 | 74% | 1,748 | 148,131 mi |
| 2000 | 76% | 1,674 | 149,460 mi |
| 1999 | 76% | 2,062 | 160,008 mi |
| 1998 | 75% | 1,597 | 153,893 mi |
| 1997 | 74% | 842 | 161,934 mi |
| 1996 | 77% | 556 | 158,416 mi |
| 1995 | 61% | 208 | 153,421 mi |
Checking a specific AUDI A4?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2020 AUDI A4
The 2020 AUDI A4 is a premium with a 1968cc diesel engine. 13,420 of these vehicles were MOT tested in 2024, making it one of the most commonly tested cars on UK roads. Among all cars from 2020, the average MOT pass rate is 92%, and this model falls short of that benchmark.
With an average of 39,596 miles at 4 years old, AUDI A4 owners cover more miles than the average driver.
2020 AUDI A4 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 2020 AUDI A4?
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 A4 Reliability Trend
Newer AUDI A4s show better MOT pass rates than older ones, with an average improvement of 12 percentage points.
Buying a Used 2020 AUDI A4
At 4 years old, the AUDI A4 offers good value with plenty of life remaining. Most manufacturer warranties will have expired, so a pre-purchase inspection is worth the cost. If you're flexible on year, the 2021 model has the highest pass rate at 96%. With 13,420 MOT tests in our data, there's strong statistical confidence in these figures.
Alternatives to the 2020 AUDI A4
The AUDI A4 is actually the most reliable option among similar diesel premiums from this era. Here are comparable diesel cars with similar engines:
- VOLKSWAGEN GOLF (2018) 92% pass rate (same) from 111,972 tests
- FORD FOCUS (2019) 89% pass rate (-3%) from 93,803 tests
- VOLKSWAGEN POLO (2018) 84% pass rate (-8%) from 79,867 tests
- FORD KUGA (2019) 91% pass rate (-1%) from 72,831 tests