Skip to content

MOT reliability

Mg Mgb roadster

167 vehicles · 1,766 completed MOT tests analysed
79%
MOT pass rate

Based on 167 Mg Mgb roadster vehicles and 1,766 completed MOT tests, the Mg Mgb roadster has an overall 79% pass rate, with an average recorded mileage of 51,198 miles.

167
Vehicles
1,766
MOT tests
605
Avg miles / year
1.3
Faults per test
0%
Dangerous-fault share

Mg Mgb roadster problem areas

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

  • Other104%
  • Emissions & nuisance6%
  • Tyres, wheels & suspension5%
  • Steering5%
  • Brakes4%
  • Seatbelts & equipment4%
  • Lamps & electrical1%
  • Body & structure1%

Mg Mgb roadster pass rate by age

Age (years)TestsPass rate
15100%
24100%
3667%
44100%
52100%
6367%
72100%
81100%
91100%
10683%
115100%
12786%
13786%
14475%
15771%
165100%
174100%
184100%
19786%
203100%

Fuel types: Petrol (166), Other (1)

Most common Mg Mgb roadster MOT faults

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

  1. Oil leak (68 times)
  2. Parking brake: efficiency below requirements (3.7.B.7) (36 times)
  3. Offside Front wheel bearing has slight play (2.5.A.3c) (36 times)
  4. Nearside Front wheel bearing has slight play (2.5.A.3c) (32 times)
  5. Windscreen washer provides insufficient washer liquid (8.2.3) (31 times)
  6. Exhaust emissions carbon monoxide content excessive (7.3.B.1a) (30 times)
  7. Nearside Front Front wheel bearing has slight play (2.5.A.3c) (22 times)
  8. Oil leak, but not excessive (8.4.1 (a) (i)) (21 times)
  9. Offside Rear Tyre worn close to the legal limit (4.1.E.1) (19 times)
  10. Nearside Front Axle king pin has slight play in pin and/or bush (2.5.A.3a) (19 times)
  11. Play in steering rack inner joint(s) (17 times)
  12. Nearside Rear Tyre worn close to the legal limit (4.1.E.1) (17 times)
  13. Horn not working (1.6.2a) (15 times)
  14. Rear Exhaust has a minor leak of exhaust gases (7.1.2) (15 times)
  15. Nearside Stop lamp not working (1.2.1b) (14 times)

Mg Mgb roadster pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
2016 1 2 100% 90,524
2015 1 4 75% 1,618
2014 1 3 67% 23,783
2013 1 5 80% 78,357
2011 1 7 86% 32,170
2005 1 17 88% 83,321
2003 1 6 100% 91,553
2002 1 3 67% 72,498
1998 1 20 95% 16,542
1996 1 4 100% 4,076
1995 1 15 80% 30,654
1994 1 16 88% 18,895
1993 2 23 100% 40,857
1990 1 12 67% 78,979
1985 1 9 44% 90,967
1982 3 56 62% 85,741
1981 1 5 80% 37,356
1980 1 17 82% 94,071
1979 5 71 70% 74,175
1978 11 79 77% 44,681
1977 8 102 75% 77,135
1976 5 37 76% 44,298
1975 1 16 75% 49,117
1974 5 43 74% 86,952
1973 11 100 79% 37,820
1972 19 244 80% 48,634
1971 16 176 75% 49,388
1970 10 90 72% 46,168
1969 9 133 86% 54,095
1968 7 88 81% 39,541
1967 6 97 81% 36,465
1966 9 86 93% 51,164
1965 7 49 76% 53,120
1964 8 81 85% 41,643
1963 8 49 86% 41,024

Mg Mgb roadster reliability FAQ

Across 167 Mg Mgb roadster vehicles in our MOT data, 79% pass the MOT (a 21% failure rate), with about 1.3 faults or advisories recorded per test.

The most frequently recorded Mg Mgb roadster MOT issues are: Oil leak; Parking brake: efficiency below requirements (3.7.B.7); Offside Front wheel bearing has slight play (2.5.A.3c).

The typical Mg Mgb roadster in our data has covered around 51,198 miles.

Compare the Mg Mgb roadster

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

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

Check a specific Mg Mgb 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