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MOT reliability

Mercedes-benz 300

18,170 vehicles · 170,687 completed MOT tests analysed
73%
MOT pass rate

Based on 18,170 Mercedes-benz 300 vehicles and 170,687 completed MOT tests, the Mercedes-benz 300 has an overall 73% pass rate, with an average recorded mileage of 149,596 miles.

18,170
Vehicles
170,687
MOT tests
4,330
Avg miles / year
2
Faults per test
1%
Dangerous-fault share

Mercedes-benz 300 problem areas

Where faults occur most across all Mercedes-benz 300 MOT tests:

  • Other91%
  • Tyres, wheels & suspension8%
  • Brakes7%
  • Emissions & nuisance4%
  • Seatbelts & equipment4%
  • Steering4%
  • Lamps & electrical2%
  • Body & structure2%

Mercedes-benz 300 pass rate by age

How the Mercedes-benz 300's MOT pass rate changes as it ages (buckets with 20+ tests).

Age (years)TestsPass rate
13974%
25176%
313283%
415181%
513987%
617878%
724779%
836676%
940973%
1042073%
1142474%
1280274%
132,57474%
145,50375%
158,36073%
1611,05572%
1712,82072%
1813,20671%
1912,68271%
2011,60471%

Fuel types: Petrol (12,561), Diesel (5,569), LPG (26), Electric Diesel (11), Hybrid Electric (Clean) (3)

Most common Mercedes-benz 300 MOT faults

These are the faults and advisories recorded most often across Mercedes-benz 300 MOT tests:

  1. Oil leak (7,178 times)
  2. Nearside Rear Tyre worn close to the legal limit (4.1.E.1) (4,933 times)
  3. Offside Rear Tyre worn close to the legal limit (4.1.E.1) (4,864 times)
  4. Nearside Front Tyre worn close to the legal limit (4.1.E.1) (4,038 times)
  5. Offside Front Tyre worn close to the legal limit (4.1.E.1) (4,027 times)
  6. Parking brake: efficiency below requirements (3.7.B.7) (3,874 times)
  7. Offside Rear Brake pipe slightly corroded (3.6.B.2c) (3,584 times)
  8. Nearside Rear Brake pipe slightly corroded (3.6.B.2c) (3,499 times)
  9. Oil leak, but not excessive (8.4.1 (a) (i)) (3,495 times)
  10. Offside Front Brake pipe slightly corroded (3.6.B.2c) (3,277 times)
  11. Fuel pipe/s corroded (2,937 times)
  12. Nearside Front Brake pipe slightly corroded (3.6.B.2c) (2,902 times)
  13. Nearside Front wheel bearing has slight play (2.5.A.3c) (2,306 times)
  14. Brake pipe slightly corroded (3.6.B.2c) (2,231 times)
  15. Offside Front wheel bearing has slight play (2.5.A.3c) (2,169 times)

Mercedes-benz 300 pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
2023 1 1 100% 36,703
2022 1 1 100% 27,729
2021 4 5 100% 48,772
2020 5 20 95% 86,791
2019 8 27 89% 77,542
2018 4 9 89% 76,619
2017 5 19 89% 34,472
2016 8 30 83% 81,426
2015 6 42 79% 81,524
2014 5 29 83% 117,750
2013 3 12 67% 46,785
2012 6 47 77% 115,951
2011 7 87 75% 107,541
2010 12 144 78% 131,963
2009 12 156 83% 90,685
2008 8 67 75% 96,259
2007 16 134 87% 68,463
2006 12 143 81% 90,706
2005 9 50 84% 126,363
2004 17 225 74% 171,967
2003 16 175 69% 184,512
2002 20 178 72% 129,961
2001 14 128 75% 137,843
2000 19 190 76% 105,018
1999 79 868 70% 160,645
1998 114 1,202 71% 166,012
1997 46 454 74% 172,600
1996 36 276 73% 147,251
1995 28 258 74% 211,240
1994 120 1,313 70% 151,294
1993 1,206 13,142 74% 164,098
1992 2,788 27,597 74% 161,235
1991 2,606 25,483 74% 158,086
1990 3,002 25,920 72% 156,087
1989 2,690 26,349 75% 142,557
1988 2,103 19,322 74% 138,876
1987 1,375 12,683 75% 135,825
1986 750 7,119 74% 130,221
1985 192 1,380 68% 132,782
1984 214 1,612 69% 148,809
1983 211 1,505 67% 157,858
1982 155 972 68% 143,136
1981 39 231 63% 187,240
1980 23 139 71% 152,536
1979 14 54 78% 153,439
1978 8 19 58% 100,438
1977 8 61 72% 136,482
1976 1 2 50% 78,399
1975 1 6 33% 302,684
1973 1 16 69% 5,103
1972 21 107 83% 53,219
1971 34 221 76% 103,287
1970 10 47 72% 60,705
1969 5 12 67% 57,543
1968 3 11 91% 33,598
1967 7 50 82% 57,155
1966 12 75 80% 64,018
1965 9 54 81% 37,105
1964 9 49 78% 53,682
1963 8 66 85% 72,821
1962 2 3 67% 8,805
1961 2 16 100% 57,874
1960 2 8 88% 34,229
1958 5 12 83% 31,389
1957 1 1 100% 69,816
1956 2 5 100% 48,862
1955 4 15 80% 40,531
1954 4 30 90% 56,257
1953 2 6 100% 28,705

Mercedes-benz 300 reliability FAQ

Across 18,170 Mercedes-benz 300 vehicles in our MOT data, 73% pass the MOT (a 27% failure rate), with about 2 faults or advisories recorded per test.

The most frequently recorded Mercedes-benz 300 MOT issues are: Oil leak; 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).

The typical Mercedes-benz 300 in our data has covered around 149,596 miles.

Compare the Mercedes-benz 300

See how the Mercedes-benz 300 stacks up against other Mercedes-benz models on MOT reliability:

300 vs C 300 vs E 300 vs Sprinter 300 vs A-class

Check a specific Mercedes-benz 300

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