1973 MG B Gt — MOT History by Age

How cars manufactured in 1973 perform at MOT as they age

53 years

Current Age

87.7%

Latest Pass Rate

3,598

Total Tests (All Years)

43,031 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 1973 MG B Gt as it ages.

36 yrs62.4%

→ ↑4.7%

37 yrs67.1%

→ ↑7.4%

38 yrs74.5%

→ ↓4.0%

39 yrs70.5%

→ ↑2.9%

40 yrs73.4%

→ ↓1.4%

41 yrs72.0%

→ ↑0.5%

42 yrs72.5%

→ ↑0.3%

43 yrs72.8%

→ ↑1.4%

44 yrs74.2%

→ ↑2.7%

45 yrs76.9%

→ ↑3.8%

46 yrs80.7%

→ ↓1.3%

47 yrs79.4%

→ ↑1.2%

48 yrs80.6%

→ ↓1.4%

49 yrs79.2%

→ ↑6.5%

50 yrs85.7%

→ ↑2.0%

51 yrs87.7%

📊 View as table

Age	Pass Rate	Tests
36 yrs	62.4%	306
37 yrs	67.1%	292
38 yrs	74.5%	294
39 yrs	70.5%	302
40 yrs	73.4%	282
41 yrs	72.0%	293
42 yrs	72.5%	320
43 yrs	72.8%	335
44 yrs	74.2%	318
45 yrs	76.9%	117
46 yrs	80.7%	88
47 yrs	79.4%	68
48 yrs	80.6%	165
49 yrs	79.2%	130
50 yrs	85.7%	133
51 yrs	87.7%	155

Pass Rate Trend

How the 1973 MG B Gt pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (51 yrs)	87.7%	155
2023 (50 yrs)	85.7%	133
2022 (49 yrs)	79.2%	130
2021 (48 yrs)	80.6%	165
2020 (47 yrs)	79.4%	68
2019 (46 yrs)	80.7%	88
2018 (45 yrs)	76.9%	117
2017 (44 yrs)	74.2%	318
2016 (43 yrs)	72.8%	335
2015 (42 yrs)	72.5%	320
2014 (41 yrs)	72%	293
2013 (40 yrs)	73.4%	282
2012 (39 yrs)	70.5%	302
2011 (38 yrs)	74.5%	294
2010 (37 yrs)	67.1%	292
2009 (36 yrs)	62.4%	306

Year-by-Year MOT Results

2009High Fail Rate

62.4%

Age (yrs) 36Tests 306Avg Mileage 43,882Top Failure Lamps, Reflectors and Electrical Equipment — 19.9%

2010

67.1%

Age (yrs) 37Tests 292Avg Mileage 44,204Top Failure Lamps, Reflectors and Electrical Equipment — 18.5%

2011

74.5%

Age (yrs) 38Tests 294Avg Mileage 44,586Top Failure Brakes — 14.3%

2012

70.5%

Age (yrs) 39Tests 302Avg Mileage 42,287Top Failure Suspension — 17.2%

2013

73.4%

Age (yrs) 40Tests 282Avg Mileage 44,262Top Failure Suspension — 35.5%

2014

72.0%

Age (yrs) 41Tests 293Avg Mileage 42,645Top Failure Suspension — 31.7%

2015

72.5%

Age (yrs) 42Tests 320Avg Mileage 43,275Top Failure Suspension — 35.6%

2016

72.8%

Age (yrs) 43Tests 335Avg Mileage 42,174Top Failure Lamps, Reflectors and Electrical Equipment — 31.0%

2017

74.2%

Age (yrs) 44Tests 318Avg Mileage 42,452Top Failure Lamps, Reflectors and Electrical Equipment — 25.2%

2018

76.9%

Age (yrs) 45Tests 117Avg Mileage 42,935Top Failure Brakes — 29.1%

2019

80.7%

Age (yrs) 46Tests 88Avg Mileage 41,514Top Failure Lamps, reflectors and electrical equipment — 22.7%

2020

79.4%

Age (yrs) 47Tests 68Avg Mileage 44,107Top Failure Brakes — 38.2%

2021

80.6%

Age (yrs) 48Tests 165Avg Mileage 43,052Top Failure Suspension — 21.8%

2022

79.2%

Age (yrs) 49Tests 130Avg Mileage 44,935Top Failure Suspension — 18.5%

2023

85.7%

Age (yrs) 50Tests 133Avg Mileage 45,229Top Failure Lamps, reflectors and electrical equipment — 22.6%

2024

87.7%

Age (yrs) 51Tests 155Avg Mileage 43,031Top Failure Brakes — 14.2%

MOT results for 1973 MG B Gt by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	36	62.4%	306	43,882	Lamps, Reflectors and Electrical Equipment — 19.9%
2010	37	67.1%	292	44,204	Lamps, Reflectors and Electrical Equipment — 18.5%
2011	38	74.5%	294	44,586	Brakes — 14.3%
2012	39	70.5%	302	42,287	Suspension — 17.2%
2013	40	73.4%	282	44,262	Suspension — 35.5%
2014	41	72.0%	293	42,645	Suspension — 31.7%
2015	42	72.5%	320	43,275	Suspension — 35.6%
2016	43	72.8%	335	42,174	Lamps, Reflectors and Electrical Equipment — 31.0%
2017	44	74.2%	318	42,452	Lamps, Reflectors and Electrical Equipment — 25.2%
2018	45	76.9%	117	42,935	Brakes — 29.1%
2019	46	80.7%	88	41,514	Lamps, reflectors and electrical equipment — 22.7%
2020	47	79.4%	68	44,107	Brakes — 38.2%
2021	48	80.6%	165	43,052	Suspension — 21.8%
2022	49	79.2%	130	44,935	Suspension — 18.5%
2023	50	85.7%	133	45,229	Lamps, reflectors and electrical equipment — 22.6%
2024	51	87.7%	155	43,031	Brakes — 14.2%

Common MOT Failures

Top failure categories across all test years for 1973 MG B Gt, with age trends.

Lamps, Reflectors and Electrical Equipment

22.1%

↓ Decreases with age

Brakes

20.8%

↓ Decreases with age

Suspension

19.6%

↓ Decreases with age

Lamps, reflectors and electrical equipment

18.5%

↓ Decreases with age

Body, chassis, structure

13.2%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Suspension	18.3% (36 yrs)	5.8% (51 yrs)	-12.5%	🟢 ↓
Brakes	19.6% (36 yrs)	14.2% (51 yrs)	-5.4%	🟢 ↓

Other Manufacture Years

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

← Back to MG B Gt overview

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About This Data

This page shows how MG B Gt cars manufactured in 1973 perform at MOT as they age. Data spans from 2009 to 2024, covering 3,598 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.