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MOT reliability

Mg B roadster

317 vehicles · 3,825 completed MOT tests analysed
78%
MOT pass rate

Based on 317 Mg B roadster vehicles and 3,825 completed MOT tests, the Mg B roadster has an overall 78% pass rate, with an average recorded mileage of 47,568 miles.

317
Vehicles
3,825
MOT tests
580
Avg miles / year
1.4
Faults per test
0%
Dangerous-fault share

Mg B roadster problem areas

Where faults occur most across all Mg B roadster MOT tests:

  • Other105%
  • Emissions & nuisance6%
  • Steering6%
  • Tyres, wheels & suspension5%
  • Brakes4%
  • Seatbelts & equipment3%
  • Lamps & electrical2%
  • Visibility1%

Mg B roadster pass rate by age

Age (years)TestsPass rate
1667%
25100%
3875%
45100%
54100%
6978%
71173%
81070%
9786%
101182%
111573%
121479%
131878%
141580%
151872%
161669%
171486%
181688%
191182%
201275%

Fuel types: Petrol (316), Other (1)

Most common Mg B roadster MOT faults

These are the faults and advisories recorded most often across Mg B roadster MOT tests:

  1. Oil leak (95 times)
  2. Oil leak, but not excessive (8.4.1 (a) (i)) (69 times)
  3. Parking brake: efficiency below requirements (3.7.B.7) (64 times)
  4. Horn not working (1.6.2a) (60 times)
  5. Windscreen washer provides insufficient washer liquid (8.2.3) (60 times)
  6. Exhaust emissions carbon monoxide content excessive (7.3.B.1a) (57 times)
  7. Offside Front wheel bearing has slight play (2.5.A.3c) (45 times)
  8. Nearside Front wheel bearing has slight play (2.5.A.3c) (40 times)
  9. Offside Front Axle king pin has slight play in pin and/or bush (2.5.A.3a) (39 times)
  10. Nearside Rear Shock absorber has a light misting of oil (2.7.3) (38 times)
  11. Nearside Front Axle king pin has slight play in pin and/or bush (2.5.A.3a) (38 times)
  12. Offside Rear Suspension spring mounting prescribed area is excessively corroded (2.4.A.3) (37 times)
  13. Brakes imbalanced across an axle (3.7.B.5b) (37 times)
  14. Exhaust emissions hydrocarbon content excessive (7.3.B.1b) (33 times)
  15. Nearside Rear Suspension spring mounting prescribed area is excessively corroded (2.4.A.3) (32 times)

Mg B roadster pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
2014 1 6 67% 29,400
2012 1 11 73% 75,887
2008 1 25 76% 33,324
2005 1 13 100% 50,201
2004 1 12 92% 16,758
2003 3 30 73% 28,822
2002 1 9 56% 8,230
2000 1 19 63% 53,470
1999 2 18 67% 64,853
1998 1 3 100% 35,899
1997 1 12 100% 7,038
1996 2 25 84% 36,192
1995 2 37 86% 85,539
1992 1 15 73% 95,025
1991 1 17 76% 72,385
1990 2 30 80% 26,683
1989 2 30 83% 175,820
1988 1 21 67% 50,720
1985 1 22 77% 19,845
1981 7 119 80% 59,898
1980 13 185 76% 56,597
1979 14 158 76% 37,657
1978 25 289 70% 49,463
1977 15 206 74% 69,586
1976 11 130 75% 53,177
1975 12 142 77% 42,131
1974 20 233 76% 50,347
1973 18 189 79% 48,856
1972 31 360 77% 34,004
1971 27 335 75% 67,246
1970 21 241 86% 39,518
1969 15 236 81% 45,165
1968 10 103 83% 36,460
1967 13 140 79% 44,610
1966 9 100 79% 29,003
1964 5 30 87% 25,685
1963 7 79 87% 34,307
1956 1 11 73% 22,233

Mg B roadster reliability FAQ

Across 317 Mg B roadster vehicles in our MOT data, 78% pass the MOT (a 22% failure rate), with about 1.4 faults or advisories recorded per test.

The most frequently recorded Mg B roadster MOT issues are: Oil leak; Oil leak, but not excessive (8.4.1 (a) (i)); Parking brake: efficiency below requirements (3.7.B.7).

The typical Mg B roadster in our data has covered around 47,568 miles.

Compare the Mg B roadster

See how the Mg B roadster stacks up against other Mg models on MOT reliability:

B roadster vs Metro B roadster vs B gt B roadster vs Mgf B roadster vs Zs

Check a specific Mg B roadster

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

See all Mg models · Learn about common MOT failures · what an MOT checks