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MOT reliability

Mercedes-benz 400

216 vehicles · 1,344 completed MOT tests analysed
75%
MOT pass rate

Based on 216 Mercedes-benz 400 vehicles and 1,344 completed MOT tests, the Mercedes-benz 400 has an overall 75% pass rate, with an average recorded mileage of 138,033 miles.

216
Vehicles
1,344
MOT tests
4,790
Avg miles / year
1.9
Faults per test
0%
Dangerous-fault share

Mercedes-benz 400 problem areas

Where faults occur most across all Mercedes-benz 400 MOT tests:

  • Other99%
  • Tyres, wheels & suspension6%
  • Brakes5%
  • Steering4%
  • Emissions & nuisance4%
  • Lamps & electrical2%
  • Seatbelts & equipment1%
  • Visibility1%

Mercedes-benz 400 pass rate by age

How the Mercedes-benz 400's MOT pass rate changes as it ages (buckets with 20+ tests).

Age (years)TestsPass rate
11100%
23100%
3786%
48100%
5888%
61191%
71377%
81070%
9989%
10786%
11786%
123672%
1311772%
1419573%
1516672%
1613872%
1711872%
188475%
198168%
205976%

Fuel types: Petrol (201), Diesel (6), Hybrid Electric (Clean) (4), LPG (3), Electric (2)

Most common Mercedes-benz 400 MOT faults

These are the faults and advisories recorded most often across Mercedes-benz 400 MOT tests:

  1. Nearside Rear Tyre worn close to the legal limit (4.1.E.1) (79 times)
  2. Offside Rear Tyre worn close to the legal limit (4.1.E.1) (60 times)
  3. Nearside Front Tyre worn close to the legal limit (4.1.E.1) (49 times)
  4. Offside Front Tyre worn close to the legal limit (4.1.E.1) (44 times)
  5. Oil leak (43 times)
  6. Nearside Front Shock absorber has a light misting of oil (2.7.3) (35 times)
  7. Parking brake: efficiency below requirements (3.7.B.7) (33 times)
  8. Offside Rear Brake pipe slightly corroded (3.6.B.2c) (27 times)
  9. Offside Front Shock absorber has a light misting of oil (2.7.3) (25 times)
  10. Offside Front Brake pipe slightly corroded (3.6.B.2c) (24 times)
  11. Rear Brake pipe slightly corroded (3.6.B.2c) (24 times)
  12. Brake pipe slightly corroded (3.6.B.2c) (24 times)
  13. Fuel pipe/s corroded (23 times)
  14. Windscreen has damage to an area less than a 40mm circle outside zone 'A' (8.3.1d) (22 times)
  15. Nearside Rear Tyre tread depth below requirements of 1.6mm (4.1.E.1) (21 times)

Mercedes-benz 400 pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
2022 1 2 100% 47,377
2021 1 1 100% 58,174
2020 1 1 100% 28,410
2018 2 2 100% 10,524
2016 4 23 83% 48,009
2015 1 9 100% 75,403
2014 1 1 100% 75,143
2013 2 4 100% 42,559
2010 1 6 83% 87,878
2004 1 25 64% 130,691
2001 2 12 92% 100,872
2000 2 13 69% 150,777
1996 2 27 81% 134,894
1995 1 6 67% 284,279
1994 6 26 77% 157,055
1993 68 489 74% 159,014
1992 100 603 74% 134,729
1991 16 84 74% 130,657
1985 1 1 100% 73,991
1979 1 4 75% 87,267
1975 1 4 75% 185,689
1974 1 1 100% 305,200

Mercedes-benz 400 reliability FAQ

Across 216 Mercedes-benz 400 vehicles in our MOT data, 75% pass the MOT (a 25% failure rate), with about 1.9 faults or advisories recorded per test.

The most frequently recorded Mercedes-benz 400 MOT issues are: Nearside Rear Tyre worn close to the legal limit (4.1.E.1); Offside Rear Tyre worn close to the legal limit (4.1.E.1); Nearside Front Tyre worn close to the legal limit (4.1.E.1).

The typical Mercedes-benz 400 in our data has covered around 138,033 miles.

Compare the Mercedes-benz 400

See how the Mercedes-benz 400 stacks up against other Mercedes-benz models on MOT reliability:

400 vs C 400 vs E 400 vs Sprinter 400 vs A-class

Check a specific Mercedes-benz 400

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