MOT reliability
Mg Mgb
2,572 vehicles · 27,969 completed MOT tests analysed
77%
MOT pass rate
Based on 2,572 Mg Mgb vehicles and 27,969 completed MOT tests, the Mg Mgb has an overall 77% pass rate, with an average recorded mileage of 52,977 miles.
2,572
Vehicles
27,969
MOT tests
722
Avg miles / year
1.4
Faults per test
0%
Dangerous-fault share
Mg Mgb problem areas
Where faults occur most across all Mg Mgb MOT tests:
-
Other97%
-
Tyres, wheels & suspension6%
-
Steering6%
-
Emissions & nuisance6%
-
Brakes4%
-
Seatbelts & equipment4%
-
Lamps & electrical2%
-
Body & structure1%
Mg Mgb pass rate by age
How the Mg Mgb's MOT pass rate changes as it ages (buckets with 20+ tests).
| Age (years) | Tests | Pass rate |
|---|---|---|
| 1 | 22 | 82% |
| 2 | 20 | 70% |
| 3 | 27 | 70% |
| 4 | 33 | 76% |
| 5 | 31 | 77% |
| 6 | 30 | 87% |
| 7 | 43 | 79% |
| 8 | 47 | 87% |
| 9 | 44 | 89% |
| 10 | 57 | 81% |
| 11 | 58 | 84% |
| 12 | 60 | 82% |
| 13 | 68 | 76% |
| 14 | 80 | 72% |
| 15 | 81 | 80% |
| 16 | 86 | 83% |
| 17 | 83 | 83% |
| 18 | 84 | 82% |
| 19 | 79 | 82% |
| 20 | 71 | 82% |
Fuel types: Petrol (2,571), Other (1)
Most common Mg Mgb MOT faults
These are the faults and advisories recorded most often across Mg Mgb MOT tests:
- Oil leak (865 times)
- Parking brake: efficiency below requirements (3.7.B.7) (559 times)
- Windscreen washer provides insufficient washer liquid (8.2.3) (456 times)
- Exhaust emissions carbon monoxide content excessive (7.3.B.1a) (441 times)
- Horn not working (1.6.2a) (407 times)
- Offside Front wheel bearing has slight play (2.5.A.3c) (404 times)
- Oil leak, but not excessive (8.4.1 (a) (i)) (393 times)
- Nearside Front wheel bearing has slight play (2.5.A.3c) (392 times)
- Nearside Front Axle king pin has slight play in pin and/or bush (2.5.A.3a) (339 times)
- Offside Front Axle king pin has slight play in pin and/or bush (2.5.A.3a) (314 times)
- Offside Rear Shock absorber has a light misting of oil (2.7.3) (263 times)
- Nearside Front Front wheel bearing has slight play (2.5.A.3c) (260 times)
- Brakes imbalanced across an axle (3.7.B.5b) (238 times)
- Nearside Front Shock absorber has a light misting of oil (2.7.3) (234 times)
- Nearside Rear Shock absorber has a light misting of oil (2.7.3) (233 times)
Mg Mgb pass rate by registration year
| Year | Vehicles | Tests | Pass rate | Avg mileage |
|---|---|---|---|---|
| 2018 | 1 | 2 | 100% | 84,030 |
| 2016 | 6 | 16 | 88% | 55,009 |
| 2015 | 2 | 14 | 71% | 45,372 |
| 2014 | 4 | 22 | 68% | 48,174 |
| 2013 | 3 | 21 | 90% | 38,166 |
| 2012 | 4 | 29 | 79% | 42,583 |
| 2011 | 1 | 6 | 100% | 36,336 |
| 2010 | 1 | 11 | 100% | 8,872 |
| 2009 | 1 | 7 | 86% | 62,519 |
| 2008 | 1 | 14 | 79% | 60,482 |
| 2005 | 1 | 22 | 91% | 17,652 |
| 2004 | 5 | 51 | 78% | 38,862 |
| 2003 | 4 | 46 | 76% | 50,057 |
| 2002 | 6 | 97 | 77% | 23,779 |
| 2001 | 3 | 34 | 76% | 65,335 |
| 2000 | 10 | 108 | 82% | 49,731 |
| 1999 | 7 | 66 | 91% | 75,143 |
| 1998 | 13 | 167 | 83% | 36,879 |
| 1997 | 6 | 89 | 82% | 51,655 |
| 1996 | 10 | 138 | 78% | 55,596 |
| 1995 | 3 | 22 | 95% | 48,288 |
| 1994 | 2 | 19 | 79% | 52,581 |
| 1993 | 8 | 80 | 84% | 46,083 |
| 1992 | 11 | 146 | 83% | 128,370 |
| 1991 | 11 | 142 | 75% | 37,444 |
| 1990 | 12 | 135 | 75% | 52,244 |
| 1989 | 2 | 10 | 60% | 19,597 |
| 1988 | 2 | 23 | 100% | 30,182 |
| 1987 | 2 | 35 | 63% | 97,617 |
| 1986 | 3 | 27 | 78% | 42,366 |
| 1985 | 4 | 42 | 79% | 73,355 |
| 1984 | 6 | 96 | 76% | 53,146 |
| 1983 | 8 | 85 | 72% | 33,911 |
| 1982 | 13 | 139 | 71% | 57,218 |
| 1981 | 71 | 1,003 | 77% | 63,443 |
| 1980 | 69 | 891 | 73% | 60,635 |
| 1979 | 118 | 1,154 | 73% | 69,547 |
| 1978 | 164 | 1,848 | 73% | 60,180 |
| 1977 | 119 | 1,241 | 75% | 63,001 |
| 1976 | 75 | 677 | 74% | 48,223 |
| 1975 | 122 | 1,121 | 75% | 58,427 |
| 1974 | 140 | 1,511 | 79% | 62,120 |
| 1973 | 212 | 2,164 | 77% | 47,087 |
| 1972 | 332 | 3,945 | 77% | 53,001 |
| 1971 | 255 | 2,801 | 78% | 47,446 |
| 1970 | 143 | 1,512 | 78% | 47,787 |
| 1969 | 126 | 1,477 | 79% | 43,381 |
| 1968 | 86 | 863 | 81% | 57,262 |
| 1967 | 96 | 984 | 79% | 39,432 |
| 1966 | 104 | 1,087 | 81% | 44,052 |
| 1965 | 76 | 798 | 81% | 51,228 |
| 1964 | 51 | 564 | 80% | 43,566 |
| 1963 | 29 | 317 | 78% | 45,863 |
| 1962 | 6 | 46 | 87% | 49,702 |
| 1960 | 1 | 5 | 100% | 75,650 |
Mg Mgb reliability FAQ
Across 2,572 Mg Mgb vehicles in our MOT data,
77% pass the MOT (a 23% failure rate), with about
1.4 faults or advisories recorded per test.
The most frequently recorded Mg Mgb MOT issues are:
Oil leak; Parking brake: efficiency below requirements (3.7.B.7); Windscreen washer provides insufficient washer liquid (8.2.3).
The typical Mg Mgb in our data has covered around
52,977 miles.
Compare the Mg Mgb
See how the Mg Mgb stacks up against other Mg models on MOT reliability:
Check a specific Mg Mgb
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