1971 MG B Gt — MOT History by Age

How cars manufactured in 1971 perform at MOT as they age

55 years

Current Age

94.3%

Latest Pass Rate

18,444

Total Tests (All Years)

42,210 mi

Avg Mileage (Latest)

Data from official DVSA MOT testing records

Best vintage for B Gt

Insufficient data for same-age comparison.

How This Car Ages

Pass rate progression for the 1971 MG B Gt as it ages.

38 yrs65.0%

→ ↑4.1%

39 yrs69.1%

→ ↓1.4%

40 yrs67.7%

→ ↑1.0%

41 yrs68.7%

→ ↓0.7%

42 yrs68.0%

→ ↑1.4%

43 yrs69.4%

→ ↑2.6%

44 yrs72.0%

→ ↑1.8%

45 yrs73.8%

→ ↑0.8%

46 yrs74.6%

→ ↑1.2%

47 yrs75.8%

→ ↓1.3%

48 yrs74.5%

→ ↑2.3%

49 yrs76.8%

→ ↑6.6%

50 yrs83.4%

→ ↓4.2%

51 yrs79.2%

→ ↓0.3%

52 yrs78.9%

→ ↑15.4%

53 yrs94.3%

📊 View as table

Age	Pass Rate	Tests
38 yrs	65.0%	1,898
39 yrs	69.1%	1,825
40 yrs	67.7%	1,872
41 yrs	68.7%	1,835
42 yrs	68.0%	1,785
43 yrs	69.4%	1,845
44 yrs	72.0%	1,835
45 yrs	73.8%	1,780
46 yrs	74.6%	1,682
47 yrs	75.8%	690
48 yrs	74.5%	505
49 yrs	76.8%	367
50 yrs	83.4%	145
51 yrs	79.2%	106
52 yrs	78.9%	133
53 yrs	94.3%	141

Pass Rate Trend

How the 1971 MG B Gt pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (53 yrs)	94.3%	141
2023 (52 yrs)	78.9%	133
2022 (51 yrs)	79.2%	106
2021 (50 yrs)	83.4%	145
2020 (49 yrs)	76.8%	367
2019 (48 yrs)	74.5%	505
2018 (47 yrs)	75.8%	690
2017 (46 yrs)	74.6%	1,682
2016 (45 yrs)	73.8%	1,780
2015 (44 yrs)	72%	1,835
2014 (43 yrs)	69.4%	1,845
2013 (42 yrs)	68%	1,785
2012 (41 yrs)	68.7%	1,835
2011 (40 yrs)	67.7%	1,872
2010 (39 yrs)	69.1%	1,825
2009 (38 yrs)	65%	1,898

Year-by-Year MOT Results

2009

65.0%

Age (yrs) 38Tests 1,898Avg Mileage 45,809Top Failure Lamps, Reflectors and Electrical Equipment — 18.9%

2010

69.1%

Age (yrs) 39Tests 1,825Avg Mileage 46,357Top Failure Lamps, Reflectors and Electrical Equipment — 17.0%

2011

67.7%

Age (yrs) 40Tests 1,872Avg Mileage 46,639Top Failure Lamps, Reflectors and Electrical Equipment — 16.9%

2012

68.7%

Age (yrs) 41Tests 1,835Avg Mileage 47,395Top Failure Lamps, Reflectors and Electrical Equipment — 18.3%

2013

68.0%

Age (yrs) 42Tests 1,785Avg Mileage 47,233Top Failure Lamps, Reflectors and Electrical Equipment — 38.7%

2014

69.4%

Age (yrs) 43Tests 1,845Avg Mileage 46,006Top Failure Lamps, Reflectors and Electrical Equipment — 37.9%

2015

72.0%

Age (yrs) 44Tests 1,835Avg Mileage 46,694Top Failure Lamps, Reflectors and Electrical Equipment — 31.2%

2016

73.8%

Age (yrs) 45Tests 1,780Avg Mileage 46,103Top Failure Lamps, Reflectors and Electrical Equipment — 30.2%

2017

74.6%

Age (yrs) 46Tests 1,682Avg Mileage 46,243Top Failure Lamps, Reflectors and Electrical Equipment — 27.5%

2018

75.8%

Age (yrs) 47Tests 690Avg Mileage 46,824Top Failure Brakes — 24.6%

2019

74.5%

Age (yrs) 48Tests 505Avg Mileage 44,733Top Failure Suspension — 23.8%

2020

76.8%

Age (yrs) 49Tests 367Avg Mileage 45,011Top Failure Lamps, reflectors and electrical equipment — 24.8%

2021

83.4%

Age (yrs) 50Tests 145Avg Mileage 41,470Top Failure Suspension — 13.1%

2022

79.2%

Age (yrs) 51Tests 106Avg Mileage 42,921Top Failure Lamps, reflectors and electrical equipment — 16.0%

2023

78.9%

Age (yrs) 52Tests 133Avg Mileage 42,551Top Failure Lamps, reflectors and electrical equipment — 30.1%

2024

94.3%

Age (yrs) 53Tests 141Avg Mileage 42,210Top Failure Suspension — 7.1%

MOT results for 1971 MG B Gt by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	38	65.0%	1,898	45,809	Lamps, Reflectors and Electrical Equipment — 18.9%
2010	39	69.1%	1,825	46,357	Lamps, Reflectors and Electrical Equipment — 17.0%
2011	40	67.7%	1,872	46,639	Lamps, Reflectors and Electrical Equipment — 16.9%
2012	41	68.7%	1,835	47,395	Lamps, Reflectors and Electrical Equipment — 18.3%
2013	42	68.0%	1,785	47,233	Lamps, Reflectors and Electrical Equipment — 38.7%
2014	43	69.4%	1,845	46,006	Lamps, Reflectors and Electrical Equipment — 37.9%
2015	44	72.0%	1,835	46,694	Lamps, Reflectors and Electrical Equipment — 31.2%
2016	45	73.8%	1,780	46,103	Lamps, Reflectors and Electrical Equipment — 30.2%
2017	46	74.6%	1,682	46,243	Lamps, Reflectors and Electrical Equipment — 27.5%
2018	47	75.8%	690	46,824	Brakes — 24.6%
2019	48	74.5%	505	44,733	Suspension — 23.8%
2020	49	76.8%	367	45,011	Lamps, reflectors and electrical equipment — 24.8%
2021	50	83.4%	145	41,470	Suspension — 13.1%
2022	51	79.2%	106	42,921	Lamps, reflectors and electrical equipment — 16.0%
2023	52	78.9%	133	42,551	Lamps, reflectors and electrical equipment — 30.1%
2024	53	94.3%	141	42,210	Suspension — 7.1%

Common MOT Failures

Top failure categories across all test years for 1971 MG B Gt, with age trends.

Lamps, Reflectors and Electrical Equipment

25.1%

↓ Decreases with age

Suspension

20.1%

↓ Decreases with age

Brakes

19.3%

↓ Decreases with age

Lamps, reflectors and electrical equipment

17.2%

↓ Decreases with age

Noise, emissions and leaks

10.2%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Brakes	17.7% (38 yrs)	2.8% (53 yrs)	-14.9%	🟢 ↓
Suspension	17.5% (38 yrs)	7.1% (53 yrs)	-10.4%	🟢 ↓

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

Looking for the best year to buy? See the full comparison on the MG B Gt page →

About This Data

This page shows how MG B Gt cars manufactured in 1971 perform at MOT as they age. Data spans from 2009 to 2024, covering 18,444 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.