1977 MG B — MOT History by Age

How cars manufactured in 1977 perform at MOT as they age

49 years

Current Age

85.1%

Latest Pass Rate

5,981

Total Tests (All Years)

39,748 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 1977 MG B as it ages.

32 yrs63.1%

→ ↓2.3%

33 yrs60.8%

→ ↓0.9%

34 yrs59.9%

→ ↑0.6%

35 yrs60.5%

→ ↑5.3%

36 yrs65.8%

→ ↓3.5%

37 yrs62.3%

→ ↑7.0%

38 yrs69.3%

→ ↓1.8%

39 yrs67.5%

→ ↑2.5%

40 yrs70.0%

→ ↓1.3%

41 yrs68.7%

→ ↑6.6%

42 yrs75.3%

→ ↓1.1%

43 yrs74.2%

→ ↓1.5%

44 yrs72.7%

→ ↑0.3%

45 yrs73.0%

→ ↓7.6%

46 yrs65.4%

→ ↑19.7%

47 yrs85.1%

📊 View as table

Age	Pass Rate	Tests
32 yrs	63.1%	599
33 yrs	60.8%	599
34 yrs	59.9%	559
35 yrs	60.5%	550
36 yrs	65.8%	541
37 yrs	62.3%	538
38 yrs	69.3%	492
39 yrs	67.5%	510
40 yrs	70.0%	523
41 yrs	68.7%	265
42 yrs	75.3%	166
43 yrs	74.2%	124
44 yrs	72.7%	143
45 yrs	73.0%	111
46 yrs	65.4%	127
47 yrs	85.1%	134

Pass Rate Trend

How the 1977 MG B pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (47 yrs)	85.1%	134
2023 (46 yrs)	65.4%	127
2022 (45 yrs)	73%	111
2021 (44 yrs)	72.7%	143
2020 (43 yrs)	74.2%	124
2019 (42 yrs)	75.3%	166
2018 (41 yrs)	68.7%	265
2017 (40 yrs)	70%	523
2016 (39 yrs)	67.5%	510
2015 (38 yrs)	69.3%	492
2014 (37 yrs)	62.3%	538
2013 (36 yrs)	65.8%	541
2012 (35 yrs)	60.5%	550
2011 (34 yrs)	59.9%	559
2010 (33 yrs)	60.8%	599
2009 (32 yrs)	63.1%	599

Year-by-Year MOT Results

2009High Fail Rate

63.1%

Age (yrs) 32Tests 599Avg Mileage 45,613Top Failure Lamps, Reflectors and Electrical Equipment — 17.5%

2010High Fail Rate

60.8%

Age (yrs) 33Tests 599Avg Mileage 47,267Top Failure Lamps, Reflectors and Electrical Equipment — 20.4%

2011High Fail Rate

59.9%

Age (yrs) 34Tests 559Avg Mileage 47,619Top Failure Lamps, Reflectors and Electrical Equipment — 18.1%

2012High Fail Rate

60.5%

Age (yrs) 35Tests 550Avg Mileage 46,435Top Failure Lamps, Reflectors and Electrical Equipment — 20.4%

2013

65.8%

Age (yrs) 36Tests 541Avg Mileage 46,483Top Failure Lamps, Reflectors and Electrical Equipment — 35.3%

2014High Fail Rate

62.3%

Age (yrs) 37Tests 538Avg Mileage 45,893Top Failure Lamps, Reflectors and Electrical Equipment — 49.4%

2015

69.3%

Age (yrs) 38Tests 492Avg Mileage 47,383Top Failure Lamps, Reflectors and Electrical Equipment — 31.9%

2016

67.5%

Age (yrs) 39Tests 510Avg Mileage 44,365Top Failure Lamps, Reflectors and Electrical Equipment — 35.9%

2017

70.0%

Age (yrs) 40Tests 523Avg Mileage 43,399Top Failure Lamps, Reflectors and Electrical Equipment — 31.0%

2018

68.7%

Age (yrs) 41Tests 265Avg Mileage 43,260Top Failure Suspension — 38.9%

2019

75.3%

Age (yrs) 42Tests 166Avg Mileage 39,106Top Failure Suspension — 22.9%

2020

74.2%

Age (yrs) 43Tests 124Avg Mileage 45,549Top Failure Lamps, reflectors and electrical equipment — 29.8%

2021

72.7%

Age (yrs) 44Tests 143Avg Mileage 42,316Top Failure Lamps, reflectors and electrical equipment — 25.2%

2022

73.0%

Age (yrs) 45Tests 111Avg Mileage 43,302Top Failure Lamps, reflectors and electrical equipment — 28.8%

2023

65.4%

Age (yrs) 46Tests 127Avg Mileage 44,387Top Failure Brakes — 33.1%

2024

85.1%

Age (yrs) 47Tests 134Avg Mileage 39,748Top Failure Lamps, reflectors and electrical equipment — 9.0%

MOT results for 1977 MG B by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	32	63.1%	599	45,613	Lamps, Reflectors and Electrical Equipment — 17.5%
2010	33	60.8%	599	47,267	Lamps, Reflectors and Electrical Equipment — 20.4%
2011	34	59.9%	559	47,619	Lamps, Reflectors and Electrical Equipment — 18.1%
2012	35	60.5%	550	46,435	Lamps, Reflectors and Electrical Equipment — 20.4%
2013	36	65.8%	541	46,483	Lamps, Reflectors and Electrical Equipment — 35.3%
2014	37	62.3%	538	45,893	Lamps, Reflectors and Electrical Equipment — 49.4%
2015	38	69.3%	492	47,383	Lamps, Reflectors and Electrical Equipment — 31.9%
2016	39	67.5%	510	44,365	Lamps, Reflectors and Electrical Equipment — 35.9%
2017	40	70.0%	523	43,399	Lamps, Reflectors and Electrical Equipment — 31.0%
2018	41	68.7%	265	43,260	Suspension — 38.9%
2019	42	75.3%	166	39,106	Suspension — 22.9%
2020	43	74.2%	124	45,549	Lamps, reflectors and electrical equipment — 29.8%
2021	44	72.7%	143	42,316	Lamps, reflectors and electrical equipment — 25.2%
2022	45	73.0%	111	43,302	Lamps, reflectors and electrical equipment — 28.8%
2023	46	65.4%	127	44,387	Brakes — 33.1%
2024	47	85.1%	134	39,748	Lamps, reflectors and electrical equipment — 9.0%

Common MOT Failures

Top failure categories across all test years for 1977 MG B, with age trends.

Lamps, Reflectors and Electrical Equipment

28.0%

— Consistent

Brakes

23.7%

↑ Increases with age

Suspension

22.4%

↓ Decreases with age

Lamps, reflectors and electrical equipment

20.8%

— Consistent

Noise, emissions and leaks

19.3%

↓ 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	16.7% (32 yrs)	6.7% (47 yrs)	-10.0%	🟢 ↓

Other Manufacture Years

1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982

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About This Data

This page shows how MG B cars manufactured in 1977 perform at MOT as they age. Data spans from 2009 to 2024, covering 5,981 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.