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Mercedes-benz A 250 AMG LINE - 2021

62.6 faults per 100 tests
Year average for all cars of 2021 is 80.0 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Mercedes-benz A 250 AMG LINE, model year 2021. Sample size: 6,940 cars, 15,478 tests and 9,683 recorded faults.
0%
Less faults compared to the average car of same model year

Quick summary

Total: 6,940 cars

The 2021 Mercedes-Benz A 250 AMG Line shows a lower overall defect rate compared to the average car of the same year, with 63 defects per 100 vehicles versus 79 for the average. This model excels particularly in brake performance, with only 11% experiencing issues, significantly better than the average of 38%. It also performs well in lights and electrics, body structure, equipment, and other categories, all showing substantially fewer defects than the average. Interestingly, the model exhibits a rising defect rate with increased mileage, peaking at 275 defects per 100 vehicles for those over 124,000 miles, but still remains more reliable overall compared to the average car.

Cars by mileage segment

Total: 6,940 cars

Categories

Brakes
▲ 72.3% better
11.1 faults / 100 tests
Year avg: 40.0 / 100 tests
  • Brake disc or drum: insecure, fractured or otherwise likely to fail
Steering
▲ 14.3% better
0.6 faults / 100 tests
Year avg: 0.7 / 100 tests
Visibility
▲ 14.5% better
12.4 faults / 100 tests
Year avg: 14.5 / 100 tests
  • Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
  • Wiper blade: defective
Lights & Electrics
▲ 72.3% better
3.1 faults / 100 tests
Year avg: 11.2 / 100 tests
Wheels & Suspension
▼ 8.7% worse
94.9 faults / 100 tests
Year avg: 87.3 / 100 tests
  • Tyre tread depth not in accordance with the requirements
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
  • A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
  • A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
  • A tyre: with a lump, bulge or tear … or with cords exposed or damaged
Body/Structure
▲ 33.3% better
1.4 faults / 100 tests
Year avg: 2.1 / 100 tests
Equipment
▲ 53.3% better
0.7 faults / 100 tests
Year avg: 1.5 / 100 tests
Other
▲ 66.7% better
0.9 faults / 100 tests
Year avg: 2.7 / 100 tests

Fault rate by mileage segment

Model    Year average
0 275 0–31,000 mi 31,000–62,000 62,000–93,000 93,000–124,000 124,000+
* Metric: faults per 100 tests.

Most common faults (Top 10)

Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 3,880
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 1,198
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
ADVISORY
Occurrences: 580
A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 495
Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
MINOR
Occurrences: 376
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 372
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 315
Wiper blade: defective
MINOR
Occurrences: 281
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 208
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 196

Serious faults (Top 10)

A tyre: with a cut in excess of the requirements deep enough to reach the ply or cords
FAIL
Occurrences: 495
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 372
Tyre tread depth not in accordance with the requirements
FAIL
Occurrences: 196
Wiper blade: missing or obviously not clearing the windscreen
FAIL
Occurrences: 102
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 55
Excessive fluctuation in brake effort through each wheel revolution
FAIL
Occurrences: 33
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 32
Engine MIL inoperative or indicating a malfunction
FAIL
Occurrences: 32
Lamp not securely attached
FAIL
Occurrences: 29
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 27