1975 MG Mgb — MOT History by Age

How cars manufactured in 1975 perform at MOT as they age

51 years

Current Age

76.8%

Latest Pass Rate

535

Total Tests (All Years)

46,234 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Insufficient data for same-age comparison.

How This Car Ages

Pass rate progression for the 1975 MG Mgb as it ages.

34 yrs60.3%

→ ↑2.6%

35 yrs62.9%

→ ↑1.6%

36 yrs64.5%

→ ↓1.6%

37 yrs62.9%

→ ↑0.3%

38 yrs63.2%

→ ↑15.0%

39 yrs78.2%

→ ↓14.0%

40 yrs64.2%

→ ↑4.2%

41 yrs68.4%

→ ↑8.4%

42 yrs76.8%

📊 View as table

Age	Pass Rate	Tests
34 yrs	60.3%	63
35 yrs	62.9%	70
36 yrs	64.5%	62
37 yrs	62.9%	62
38 yrs	63.2%	57
39 yrs	78.2%	55
40 yrs	64.2%	53
41 yrs	68.4%	57
42 yrs	76.8%	56

Pass Rate Trend

How the 1975 MG Mgb pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2017 (42 yrs)	76.8%	56
2016 (41 yrs)	68.4%	57
2015 (40 yrs)	64.2%	53
2014 (39 yrs)	78.2%	55
2013 (38 yrs)	63.2%	57
2012 (37 yrs)	62.9%	62
2011 (36 yrs)	64.5%	62
2010 (35 yrs)	62.9%	70
2009 (34 yrs)	60.3%	63

Year-by-Year MOT Results

2009High Fail Rate

60.3%

Age (yrs) 34Tests 63Avg Mileage 48,192Top Failure Brakes — 20.6%

2010High Fail Rate

62.9%

Age (yrs) 35Tests 70Avg Mileage 45,222Top Failure Lamps, Reflectors and Electrical Equipment — 27.1%

2011High Fail Rate

64.5%

Age (yrs) 36Tests 62Avg Mileage 46,675Top Failure Driver's View of the Road — 19.4%

2012High Fail Rate

62.9%

Age (yrs) 37Tests 62Avg Mileage 45,758Top Failure Suspension — 19.4%

2013High Fail Rate

63.2%

Age (yrs) 38Tests 57Avg Mileage 45,340Top Failure Lamps, Reflectors and Electrical Equipment — 43.9%

2014

78.2%

Age (yrs) 39Tests 55Avg Mileage 46,023Top Failure Lamps, Reflectors and Electrical Equipment — 45.5%

2015High Fail Rate

64.2%

Age (yrs) 40Tests 53Avg Mileage 45,195Top Failure Brakes — 43.4%

2016

68.4%

Age (yrs) 41Tests 57Avg Mileage 43,764Top Failure Suspension — 38.6%

2017

76.8%

Age (yrs) 42Tests 56Avg Mileage 46,234Top Failure Lamps, Reflectors and Electrical Equipment — 25.0%

MOT results for 1975 MG Mgb by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	34	60.3%	63	48,192	Brakes — 20.6%
2010	35	62.9%	70	45,222	Lamps, Reflectors and Electrical Equipment — 27.1%
2011	36	64.5%	62	46,675	Driver's View of the Road — 19.4%
2012	37	62.9%	62	45,758	Suspension — 19.4%
2013	38	63.2%	57	45,340	Lamps, Reflectors and Electrical Equipment — 43.9%
2014	39	78.2%	55	46,023	Lamps, Reflectors and Electrical Equipment — 45.5%
2015	40	64.2%	53	45,195	Brakes — 43.4%
2016	41	68.4%	57	43,764	Suspension — 38.6%
2017	42	76.8%	56	46,234	Lamps, Reflectors and Electrical Equipment — 25.0%

Common MOT Failures

Top failure categories across all test years for 1975 MG Mgb, with age trends.

Lamps, Reflectors and Electrical Equipment

29.1%

↑ Increases with age

Suspension

24.0%

↑ Increases with age

Brakes

23.3%

— Consistent

Seat Belts and Supplementary Restraint Systems

14.0%

— Consistent

Driver's View of the Road

13.6%

↓ Decreases with age

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Suspension	12.7% (34 yrs)	23.2% (42 yrs)	+10.5%	🔴 ↑
Lamps, Reflectors and Electrical Equipment	19.0% (34 yrs)	25.0% (42 yrs)	+6.0%	🔴 ↑
Steering	11.1% (34 yrs)	8.9% (42 yrs)	-2.2%	🟢 ↓
Brakes	20.6% (34 yrs)	19.6% (42 yrs)	-1.0%	⚪ —
Exhaust, Fuel and Emissions	12.7% (34 yrs)	12.5% (42 yrs)	-0.2%	⚪ —

Other Manufacture Years

1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981

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About This Data

This page shows how MG Mgb cars manufactured in 1975 perform at MOT as they age. Data spans from 2009 to 2017, covering 535 tests. Pass rates naturally decline with age as components wear.

Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.