MERCEDES AMG A 45 S 4MATIC+ PLUS AUTO (2021)
Running costs, common problems, and reliability data based on 648 real MOT tests in 2024.
MOT Pass Rate
94%
Total Tests (2024)
648
Avg Mileage
21,187 mi
Est. Annual Cost
£1,772
Is the 2021 MERCEDES AMG A 45 S 4MATIC+ PLUS AUTO reliable?
Excellent reliability. Very few MOT failures. That's 12 points above the national average of 82%. It also outperforms the MERCEDES brand average of 87%.
At 3 years old, 94% of MERCEDES AMG A 45 S 4MATIC+ PLUS AUTOs from 2021 passed their MOT first time in 2024. That's based on 648 tests across the UK. The average mileage at this age is 21,187 miles.
How does the 2021 MERCEDES AMG A 45 S 4MATIC+ PLUS AUTO compare?
Mileage Analysis
The average 2021 MERCEDES AMG A 45 S 4MATIC+ PLUS AUTO has 21,187 miles on the clock, which is in line with the expected 22,200 miles for a 3-year-old car, suggesting normal everyday use.
How much does a 2021 MERCEDES AMG A 45 S 4MATIC+ PLUS 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+ PLUS AUTO by Year
Checking a specific MERCEDES AMG A 45 S 4MATIC+ PLUS AUTO?
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About the 2021 MERCEDES AMG A 45 S 4MATIC+ PLUS AUTO
The 2021 MERCEDES AMG A 45 S 4MATIC+ PLUS AUTO is a family car with a 1991cc petrol engine. 648 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 beats that benchmark.
With an average of 21,187 miles at 3 years old, MERCEDES AMG A 45 S 4MATIC+ PLUS AUTO owners drive about as much as the UK average.
2021 MERCEDES AMG A 45 S 4MATIC+ PLUS 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+ PLUS 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 94% pass rate. These cars rarely fail their MOT, so unexpected bills are less likely.
MERCEDES AMG A 45 S 4MATIC+ PLUS AUTO Reliability Trend
The MERCEDES AMG A 45 S 4MATIC+ PLUS AUTO has maintained consistent MOT pass rates across model years, varying by only 1 percentage points.
Buying a Used 2021 MERCEDES AMG A 45 S 4MATIC+ PLUS 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+ PLUS AUTO
The MERCEDES AMG A 45 S 4MATIC+ PLUS AUTO is actually the most reliable option among similar petrol family cars from this era. Here are comparable petrol cars with similar engines:
- VOLKSWAGEN GOLF (2019) 92% pass rate (-2%) from 89,653 tests
- NISSAN QASHQAI (2020) 93% pass rate (-1%) from 52,321 tests
- MINI COOPER (2019) 92% pass rate (-2%) from 52,140 tests
- HYUNDAI TUCSON (2019) 90% pass rate (-4%) from 42,920 tests