1974 MG B Gt — MOT History by Age

How cars manufactured in 1974 perform at MOT as they age

52 years

Current Age

74.6%

Latest Pass Rate

2,883

Total Tests (All Years)

47,666 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 1974 MG B Gt as it ages.

35 yrs67.7%

→ ↑3.6%

36 yrs71.3%

→ ↑1.0%

37 yrs72.3%

→ ↑0.9%

38 yrs73.2%

→ ↓3.2%

39 yrs70.0%

→ ↑1.7%

40 yrs71.7%

→ ↓3.0%

41 yrs68.7%

→ ↑3.5%

42 yrs72.2%

→ ↑4.9%

43 yrs77.1%

→ ↑1.5%

44 yrs78.6%

→ ↓1.3%

45 yrs77.3%

→ ↓2.8%

46 yrs74.5%

→ ↑6.5%

47 yrs81.0%

→ ↓2.6%

48 yrs78.4%

→ ↑1.2%

49 yrs79.6%

→ ↓5.0%

50 yrs74.6%

📊 View as table

Age	Pass Rate	Tests
35 yrs	67.7%	235
36 yrs	71.3%	237
37 yrs	72.3%	235
38 yrs	73.2%	254
39 yrs	70.0%	233
40 yrs	71.7%	240
41 yrs	68.7%	243
42 yrs	72.2%	263
43 yrs	77.1%	236
44 yrs	78.6%	98
45 yrs	77.3%	66
46 yrs	74.5%	51
47 yrs	81.0%	137
48 yrs	78.4%	125
49 yrs	79.6%	108
50 yrs	74.6%	122

Pass Rate Trend

How the 1974 MG B Gt pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (50 yrs)	74.6%	122
2023 (49 yrs)	79.6%	108
2022 (48 yrs)	78.4%	125
2021 (47 yrs)	81%	137
2020 (46 yrs)	74.5%	51
2019 (45 yrs)	77.3%	66
2018 (44 yrs)	78.6%	98
2017 (43 yrs)	77.1%	236
2016 (42 yrs)	72.2%	263
2015 (41 yrs)	68.7%	243
2014 (40 yrs)	71.7%	240
2013 (39 yrs)	70%	233
2012 (38 yrs)	73.2%	254
2011 (37 yrs)	72.3%	235
2010 (36 yrs)	71.3%	237
2009 (35 yrs)	67.7%	235

Year-by-Year MOT Results

2009

67.7%

Age (yrs) 35Tests 235Avg Mileage 46,210Top Failure Suspension — 19.1%

2010

71.3%

Age (yrs) 36Tests 237Avg Mileage 46,531Top Failure Suspension — 15.6%

2011

72.3%

Age (yrs) 37Tests 235Avg Mileage 44,351Top Failure Lamps, Reflectors and Electrical Equipment — 15.3%

2012

73.2%

Age (yrs) 38Tests 254Avg Mileage 45,094Top Failure Suspension — 15.4%

2013

70.0%

Age (yrs) 39Tests 233Avg Mileage 46,264Top Failure Suspension — 48.5%

2014

71.7%

Age (yrs) 40Tests 240Avg Mileage 46,324Top Failure Lamps, Reflectors and Electrical Equipment — 42.9%

2015

68.7%

Age (yrs) 41Tests 243Avg Mileage 45,354Top Failure Suspension — 35.4%

2016

72.2%

Age (yrs) 42Tests 263Avg Mileage 44,965Top Failure Brakes — 35.7%

2017

77.1%

Age (yrs) 43Tests 236Avg Mileage 44,482Top Failure Brakes — 28.8%

2018

78.6%

Age (yrs) 44Tests 98Avg Mileage 46,062Top Failure Suspension — 24.5%

2019

77.3%

Age (yrs) 45Tests 66Avg Mileage 41,855Top Failure Brakes — 33.3%

2020

74.5%

Age (yrs) 46Tests 51Avg Mileage 36,755Top Failure Suspension — 43.1%

2021

81.0%

Age (yrs) 47Tests 137Avg Mileage 45,344Top Failure Lamps, reflectors and electrical equipment — 27.0%

2022

78.4%

Age (yrs) 48Tests 125Avg Mileage 46,742Top Failure Brakes — 24.8%

2023

79.6%

Age (yrs) 49Tests 108Avg Mileage 40,287Top Failure Suspension — 19.4%

2024

74.6%

Age (yrs) 50Tests 122Avg Mileage 47,666Top Failure Lamps, reflectors and electrical equipment — 14.8%

MOT results for 1974 MG B Gt by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	35	67.7%	235	46,210	Suspension — 19.1%
2010	36	71.3%	237	46,531	Suspension — 15.6%
2011	37	72.3%	235	44,351	Lamps, Reflectors and Electrical Equipment — 15.3%
2012	38	73.2%	254	45,094	Suspension — 15.4%
2013	39	70.0%	233	46,264	Suspension — 48.5%
2014	40	71.7%	240	46,324	Lamps, Reflectors and Electrical Equipment — 42.9%
2015	41	68.7%	243	45,354	Suspension — 35.4%
2016	42	72.2%	263	44,965	Brakes — 35.7%
2017	43	77.1%	236	44,482	Brakes — 28.8%
2018	44	78.6%	98	46,062	Suspension — 24.5%
2019	45	77.3%	66	41,855	Brakes — 33.3%
2020	46	74.5%	51	36,755	Suspension — 43.1%
2021	47	81.0%	137	45,344	Lamps, reflectors and electrical equipment — 27.0%
2022	48	78.4%	125	46,742	Brakes — 24.8%
2023	49	79.6%	108	40,287	Suspension — 19.4%
2024	50	74.6%	122	47,666	Lamps, reflectors and electrical equipment — 14.8%

Common MOT Failures

Top failure categories across all test years for 1974 MG B Gt, with age trends.

Suspension

24.4%

↓ Decreases with age

Lamps, Reflectors and Electrical Equipment

24.2%

↓ Decreases with age

Brakes

21.9%

↓ Decreases with age

Lamps, reflectors and electrical equipment

16.7%

↑ Increases with age

Body, Structure and General Items

10.0%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Suspension	19.1% (35 yrs)	8.2% (50 yrs)	-10.9%	🟢 ↓
Brakes	16.2% (35 yrs)	9.8% (50 yrs)	-6.4%	🟢 ↓

Other Manufacture Years

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 B Gt cars manufactured in 1974 perform at MOT as they age. Data spans from 2009 to 2024, covering 2,883 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.