MERCEDES A (2020)
Running costs, common problems, and reliability data based on 59,637 real MOT tests in 2024.
MOT Pass Rate
93%
Total Tests (2024)
59,637
Avg Mileage
32,588 mi
Est. Annual Cost
£1,350
Is the 2020 MERCEDES A reliable?
Excellent reliability. Very few MOT failures. That's 11 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 4 years old, 93% of MERCEDES As from 2020 passed their MOT first time in 2024. That's based on 59,637 tests across the UK. The average mileage at this age is 32,588 miles.
How does the 2020 MERCEDES A compare?
Mileage Analysis
The average 2020 MERCEDES A has 32,588 miles on the clock, which is in line with the expected 29,600 miles for a 4-year-old car, suggesting normal everyday use.
Best year to buy a MERCEDES A?
The most reliable year is the 2021 model with a 94% MOT pass rate, while the 2013 model has the lowest at 87%. The 2020 sits between the two at 93%.
How much does a 2020 MERCEDES A 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.
MERCEDES A by Year
Checking a specific MERCEDES A?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2020 MERCEDES A
The 2020 MERCEDES A is a small family car with a 1461cc diesel engine. 59,637 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 beats that benchmark.
With an average of 32,588 miles at 4 years old, MERCEDES A owners drive about as much as the UK average.
2020 MERCEDES A Fuel Costs
The 1461cc diesel engine offers a reasonable balance between performance and economy. Expect around 55 mpg in mixed driving, which works out to roughly £905 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 MERCEDES A?
Total estimated annual running cost is £1,350 (£113/month), broken down as £905 fuel, £190 road tax, £55 MOT, and £200 predicted repairs. The low repair estimate reflects the excellent 93% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
MERCEDES A Reliability Trend
Newer MERCEDES As show better MOT pass rates than older ones, with an average improvement of 6 percentage points.
Buying a Used 2020 MERCEDES A
At 4 years old, the MERCEDES A 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 94%. With 59,637 MOT tests in our data, there's strong statistical confidence in these figures.
Alternatives to the 2020 MERCEDES A
The MERCEDES A is actually the most reliable option among similar diesel small family cars from this era. Here are comparable diesel cars with similar engines:
- FORD FOCUS (2019) 89% pass rate (-4%) from 93,803 tests
- MERCEDES A-CLASS (2018) 89% pass rate (-4%) from 81,134 tests
- VOLKSWAGEN POLO (2018) 84% pass rate (-9%) from 79,867 tests
- KIA SPORTAGE (2018) 88% pass rate (-5%) from 60,314 tests