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MOT reliability

Mercedes-benz A-class

362,612 vehicles · 4,198,723 completed MOT tests analysed
78%
MOT pass rate

Based on 362,612 Mercedes-benz A-class vehicles and 4,198,723 completed MOT tests, the Mercedes-benz A-class has an overall 78% pass rate, with an average recorded mileage of 86,210 miles.

362,612
Vehicles
4,198,723
MOT tests
7,153
Avg miles / year
1.6
Faults per test
3%
Dangerous-fault share

Mercedes-benz A-class problem areas

Where faults occur most across all Mercedes-benz A-class MOT tests:

  • Other61%
  • Tyres, wheels & suspension23%
  • Brakes16%
  • Lamps & electrical4%
  • Visibility3%
  • Emissions & nuisance3%
  • Steering2%
  • Body & structure1%

Mercedes-benz A-class pass rate by age

How the Mercedes-benz A-class's MOT pass rate changes as it ages (buckets with 20+ tests).

Age (years)TestsPass rate
122491%
212,17490%
3352,32188%
4356,00787%
5381,51685%
6407,38982%
7425,66780%
8404,56278%
9357,85275%
10307,68573%
11260,92171%
12218,91569%
13179,17268%
14148,46268%
15119,12467%
1691,77767%
1765,81067%
1844,44467%
1927,61467%
2016,34067%

Fuel types: Petrol (184,042), Diesel (178,506), Hybrid Electric (Clean) (38), LPG (16), Electric (4), Electric Diesel (2), Other (2), Gas (1)

Most common Mercedes-benz A-class MOT faults

These are the faults and advisories recorded most often across Mercedes-benz A-class MOT tests:

  1. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (134,626 times)
  2. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (133,422 times)
  3. Nearside Front Tyre worn close to the legal limit (4.1.E.1) (95,736 times)
  4. Under-trays fitted obscuring some underside components (90,784 times)
  5. Offside Front Tyre worn close to the legal limit (4.1.E.1) (85,291 times)
  6. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii)) (72,921 times)
  7. Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii)) (70,185 times)
  8. Offside Rear Brake pipe slightly corroded (3.6.B.2c) (65,738 times)
  9. Nearside Front Brake hose slightly deteriorated (3.6.B.4d) (65,615 times)
  10. Offside Front Brake hose slightly deteriorated (3.6.B.4d) (65,334 times)
  11. Nearside Rear Brake pipe slightly corroded (3.6.B.2c) (63,948 times)
  12. Front Brake pad(s) wearing thin (1.1.13 (a) (ii)) (61,055 times)
  13. Rear Brake pad(s) wearing thin (1.1.13 (a) (ii)) (56,499 times)
  14. Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii)) (48,498 times)
  15. Front Brake pad(s) wearing thin (3.5.1g) (47,138 times)

Mercedes-benz A-class pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
2026 3 3 100% 25,475
2025 7 13 92% 44,212
2024 5 8 100% 45,288
2023 7 7 100% 13,523
2022 32 53 91% 31,161
2021 76 167 92% 35,832
2020 129 433 86% 36,983
2019 8,396 47,382 88% 55,121
2018 41,110 257,832 87% 59,604
2017 42,656 324,373 86% 68,710
2016 39,893 341,174 84% 77,750
2015 28,855 279,234 83% 86,428
2014 25,756 277,597 82% 95,242
2013 16,745 194,373 81% 99,719
2012 5,705 78,011 80% 78,703
2011 6,076 88,341 80% 80,359
2010 7,261 114,385 79% 87,469
2009 8,777 145,005 79% 92,597
2008 9,740 167,931 77% 97,961
2007 10,650 185,991 77% 99,707
2006 11,918 203,519 75% 101,352
2005 10,333 175,386 75% 101,251
2004 8,772 150,757 72% 96,901
2003 14,729 248,298 72% 99,937
2002 15,854 257,907 70% 103,848
2001 16,762 249,390 69% 103,436
2000 14,838 199,765 66% 101,610
1999 14,050 172,142 66% 104,408
1998 3,466 39,242 65% 107,154
1997 1 7 86% 38,397
1992 1 2 50% 79,204
1972 2 3 67% 62,267
1971 2 10 60% 113,142
1970 1 2 50% 61,807
1965 1 2 50% 81,120

Mercedes-benz A-class reliability FAQ

Across 362,612 Mercedes-benz A-class vehicles in our MOT data, 78% pass the MOT (a 22% failure rate), with about 1.6 faults or advisories recorded per test.

The most frequently recorded Mercedes-benz A-class MOT issues are: Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)); Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)); Nearside Front Tyre worn close to the legal limit (4.1.E.1).

The typical Mercedes-benz A-class in our data has covered around 86,210 miles.

Compare the Mercedes-benz A-class

See how the Mercedes-benz A-class stacks up against other Mercedes-benz models on MOT reliability:

A-class vs C A-class vs E A-class vs Sprinter A-class vs Vito

Check a specific Mercedes-benz A-class

Enter a registration to see that exact vehicle's full MOT history, advisories and recurring faults.

See all Mercedes-benz models · Learn about common MOT failures · what an MOT checks