Is the Mercedes Amg a 45 s 4matic+ plus auto reliable?

The Mercedes Amg a 45 s 4matic+ plus auto has an average MOT pass rate of 95% across 4 years, based on 1,789 tests in 2026. That's 13 points above the national average of 82%. The most reliable year is 2022 with a 100% pass rate.

Which year Mercedes Amg a 45 s 4matic+ plus auto is best?

The 2022 Mercedes Amg a 45 s 4matic+ plus auto has the highest MOT pass rate at 100%, while the 2020 model has the lowest at 93%. There's a 7 percentage point spread between the best and worst years.

Mercedes Amg a 45 s 4matic+ plus auto

Reliability, running costs, and MOT data across 4 years from 1,789 real MOT tests.

Avg Pass Rate

95%

Total Tests

1,789

Best Year

2022 (100%)

Years Covered

About the Mercedes Amg a 45 s 4matic+ plus auto

The Mercedes Amg a 45 s 4matic+ plus auto has been tested 1,789 times in 2026 MOT data across 4 model years (2019 to 2022), with an average pass rate of 95%. That's comfortably above the national average of 82%, making it a reliable choice. Available as petrol.

Best and Worst Years

The 2022 model is the most reliable with a 100% pass rate from 42 tests. The 2020 model has the lowest at 93%. The 7 point spread between years means reliability varies somewhat, but no year is dramatically different.

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.

Mileage Across Years

The oldest model in our data (2019) averages 23,873 miles, while the newest (2022) averages 14,571 miles.

Compared to the Mercedes brand average of 87%, the Amg a 45 s 4matic+ plus auto performs 8 points better, making it one of the more reliable options in the Mercedes range.