MERCEDES AMG A 45 S 4MATIC+ AUTO (2021)
Running costs, common problems, and reliability data based on 154 real MOT tests in 2024.
MOT Pass Rate
92%
Total Tests (2024)
154
Avg Mileage
19,290 mi
Est. Annual Cost
£1,772
Is the 2021 MERCEDES AMG A 45 S 4MATIC+ AUTO reliable?
Excellent reliability. Very few MOT failures. That's 10 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 3 years old, 92% of MERCEDES AMG A 45 S 4MATIC+ AUTOs from 2021 passed their MOT first time in 2024. That's based on 154 tests across the UK. The average mileage at this age is 19,290 miles.
How does the 2021 MERCEDES AMG A 45 S 4MATIC+ AUTO compare?
Mileage Analysis
The average 2021 MERCEDES AMG A 45 S 4MATIC+ AUTO has 19,290 miles on the clock, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.
Best year to buy a MERCEDES AMG A 45 S 4MATIC+ AUTO?
The most reliable year is the 2020 model with a 92% MOT pass rate, while the 2021 model has the lowest at 92%. Consider a different year if reliability is a priority.
How much does a 2021 MERCEDES AMG A 45 S 4MATIC+ AUTO 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 AMG A 45 S 4MATIC+ AUTO by Year
Checking a specific MERCEDES AMG A 45 S 4MATIC+ AUTO?
Enter the reg plate to see its individual MOT history, mileage verification, and predicted costs.
About the 2021 MERCEDES AMG A 45 S 4MATIC+ AUTO
The 2021 MERCEDES AMG A 45 S 4MATIC+ AUTO is a family car with a 1991cc petrol engine. 154 of these vehicles were MOT tested in 2024, making it a rare model 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 19,290 miles at 3 years old, MERCEDES AMG A 45 S 4MATIC+ AUTO owners drive about as much as the UK average.
2021 MERCEDES AMG A 45 S 4MATIC+ AUTO Fuel Costs
The 1991cc petrol engine offers a reasonable balance between performance and economy. Expect around 36 mpg in mixed driving, which works out to roughly £1,327 per year at current petrol prices of 142p per litre (based on 7,400 miles per year).
What does it cost to own a 2021 MERCEDES AMG A 45 S 4MATIC+ AUTO?
Total estimated annual running cost is £1,772 (£148/month), broken down as £1327 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.
Buying a Used 2021 MERCEDES AMG A 45 S 4MATIC+ AUTO
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 MERCEDES AMG A 45 S 4MATIC+ AUTO
If reliability is your priority, there's one similar car with a higher MOT pass rate. Here are comparable petrol cars with similar engines:
- VOLKSWAGEN GOLF (2019) 92% pass rate (same) from 89,653 tests
- NISSAN QASHQAI (2020) 93% pass rate (+1%) from 52,321 tests
- MINI COOPER (2019) 92% pass rate (same) from 52,140 tests
- HYUNDAI TUCSON (2019) 90% pass rate (-2%) from 42,920 tests