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MOT reliability

Mercedes-benz B

7,997 vehicles · 33,337 completed MOT tests analysed
91%
MOT pass rate

Based on 7,997 Mercedes-benz B vehicles and 33,337 completed MOT tests, the Mercedes-benz B has an overall 91% pass rate, with an average recorded mileage of 36,145 miles.

7,997
Vehicles
33,337
MOT tests
6,391
Avg miles / year
0.8
Faults per test
4%
Dangerous-fault share

Mercedes-benz B problem areas

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

  • Tyres, wheels & suspension57%
  • Brakes18%
  • Other14%
  • Visibility6%
  • Lamps & electrical3%
  • Seatbelts & equipment2%
  • Identification & plates1%
  • Emissions & nuisance1%

Mercedes-benz B pass rate by age

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

Age (years)TestsPass rate
13100%
221097%
38,80092%
48,54092%
57,91390%
65,52891%
71,93989%
87177%
93278%
104183%
114388%
125679%
135372%
144477%
151974%
161968%
171173%
183100%
193100%
20560%

Fuel types: Petrol (4,806), Diesel (3,188), Electric (2), Electric Diesel (1)

Most common Mercedes-benz B MOT faults

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

  1. Nearside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (1,634 times)
  2. Offside Front Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (1,622 times)
  3. Nearside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii)) (964 times)
  4. Offside Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii)) (938 times)
  5. Rear Brake pad(s) wearing thin (1.1.13 (a) (ii)) (620 times)
  6. Front Brake pad(s) wearing thin (1.1.13 (a) (ii)) (615 times)
  7. Nearside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii)) (518 times)
  8. Offside Front Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii)) (504 times)
  9. Nearside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (417 times)
  10. Nearside Rear Child Seat fitted not allowing full inspection of adult belt (351 times)
  11. Offside Rear Tyre worn close to legal limit/worn on edge (5.2.3 (e)) (338 times)
  12. Front Brake disc worn, but not excessively (1.1.14 (a) (i)) (301 times)
  13. Windscreen damaged but not adversely affecting driver's view (3.2 (a) (i)) (225 times)
  14. Front Brake disc worn, pitted or scored, but not seriously weakened (1.1.14 (a) (ii)) (225 times)
  15. Nearside Rear Nail in tyre (216 times)

Mercedes-benz B pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
2024 1 1 0% —
2023 95 103 94% 20,070
2022 217 304 93% 24,581
2021 1,234 3,715 92% 31,356
2020 2,682 10,730 91% 34,550
2019 3,577 17,726 91% 38,661
2018 69 336 88% 44,623
2017 7 42 71% 78,988
2016 7 20 90% 49,768
2015 13 34 85% 61,283
2014 22 68 78% 63,460
2013 16 38 82% 59,159
2012 25 65 83% 63,133
2011 5 33 79% 135,458
2010 7 47 74% 82,770
2009 9 45 73% 132,111
2008 2 6 50% 142,868
2007 3 6 80% 62,196
2006 3 8 62% 104,950
2005 3 12 67% 71,765

Mercedes-benz B reliability FAQ

Across 7,997 Mercedes-benz B vehicles in our MOT data, 91% pass the MOT (a 9% failure rate), with about 0.8 faults or advisories recorded per test.

The most frequently recorded Mercedes-benz B 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 Rear Tyre slightly damaged/cracking or perishing (5.2.3 (d) (ii)).

The typical Mercedes-benz B in our data has covered around 36,145 miles.

Compare the Mercedes-benz B

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

B vs C B vs E B vs Sprinter B vs A-class

Check a specific Mercedes-benz B

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