CarCostCheck

Mercedes Amg cla 45 s 4matic+ plus auto

Reliability, running costs, and MOT data across 2 years from 1,040 real MOT tests.

Avg Pass Rate

93%

Total Tests

1,040

Best Year

2020 (93%)

Years Covered

2

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

The Mercedes Amg cla 45 s 4matic+ plus auto has been tested 1,040 times in 2026 MOT data across 2 model years (2020 to 2021), with an average pass rate of 93%. That's comfortably above the national average of 82%, making it a reliable choice. Available as petrol.

Best and Worst Years

The 2020 model is the most reliable with a 93% pass rate from 600 tests. The 2021 model has the lowest at 92%. With just a 1 point spread, the Amg cla 45 s 4matic+ plus auto is consistently reliable regardless of year.

Mileage Across Years

The oldest model in our data (2020) averages 32,941 miles, while the newest (2021) averages 23,145 miles.

Compared to the Mercedes brand average of 87%, the Amg cla 45 s 4matic+ plus auto performs 6 points better, making it one of the more reliable options in the Mercedes range.

Estimated Running Costs

Fuel (Petrol, 1991cc)
£1,327
Road Tax
£195
MOT Test
£55
Predicted Repairs
£200
Total per year£1,777
Per month£148/mo

Based on 7,400 miles/year, current fuel prices, and MOT pass rate data. Insurance not included.

Full 2021 details

How reliable is the Mercedes Amg cla 45 s 4matic+ plus auto?

vs national average+11% (82% avg)
vs Mercedes brand average+6% (87% avg)
Best to worst year spread1 percentage points

Mercedes Amg cla 45 s 4matic+ plus auto by Year

Click any year to see detailed running costs, reliability data, and comparisons with similar cars.

YearPass RateTestsAvg Mileage
202192%44023,145 mi
202093%60032,941 mi

Mercedes Amg cla 45 s 4matic+ plus auto Guides & Articles

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