1974 MG B — MOT History by Age

How cars manufactured in 1974 perform at MOT as they age

52 years

Current Age

83.6%

Latest Pass Rate

3,708

Total Tests (All Years)

41,017 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 as it ages.

35 yrs74.2%

→ ↓1.6%

36 yrs72.6%

→ ↑2.7%

37 yrs75.3%

→ ↑0.9%

38 yrs76.2%

→ ↑1.0%

39 yrs77.2%

→ ↓6.9%

40 yrs70.3%

→ ↑5.0%

41 yrs75.3%

→ ↑1.0%

42 yrs76.3%

→ ↓2.8%

43 yrs73.5%

→ ↑2.3%

44 yrs75.8%

→ ↑11.1%

45 yrs86.9%

→ ↑0.1%

46 yrs87.0%

→ ↓9.8%

47 yrs77.2%

→ ↑1.7%

48 yrs78.9%

→ ↓3.9%

49 yrs75.0%

→ ↑8.6%

50 yrs83.6%

📊 View as table

Age	Pass Rate	Tests
35 yrs	74.2%	283
36 yrs	72.6%	274
37 yrs	75.3%	275
38 yrs	76.2%	273
39 yrs	77.2%	263
40 yrs	70.3%	276
41 yrs	75.3%	283
42 yrs	76.3%	299
43 yrs	73.5%	358
44 yrs	75.8%	165
45 yrs	86.9%	122
46 yrs	87.0%	100
47 yrs	77.2%	197
48 yrs	78.9%	161
49 yrs	75.0%	172
50 yrs	83.6%	207

Pass Rate Trend

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

📊 View as table

Built	Pass Rate	Tests
2024 (50 yrs)	83.6%	207
2023 (49 yrs)	75%	172
2022 (48 yrs)	78.9%	161
2021 (47 yrs)	77.2%	197
2020 (46 yrs)	87%	100
2019 (45 yrs)	86.9%	122
2018 (44 yrs)	75.8%	165
2017 (43 yrs)	73.5%	358
2016 (42 yrs)	76.3%	299
2015 (41 yrs)	75.3%	283
2014 (40 yrs)	70.3%	276
2013 (39 yrs)	77.2%	263
2012 (38 yrs)	76.2%	273
2011 (37 yrs)	75.3%	275
2010 (36 yrs)	72.6%	274
2009 (35 yrs)	74.2%	283

Year-by-Year MOT Results

2009

74.2%

Age (yrs) 35Tests 283Avg Mileage 42,380Top Failure Lamps, Reflectors and Electrical Equipment — 12.7%

2010

72.6%

Age (yrs) 36Tests 274Avg Mileage 44,403Top Failure Lamps, Reflectors and Electrical Equipment — 13.9%

2011

75.3%

Age (yrs) 37Tests 275Avg Mileage 42,222Top Failure Brakes — 13.1%

2012

76.2%

Age (yrs) 38Tests 273Avg Mileage 42,747Top Failure Lamps, Reflectors and Electrical Equipment — 13.9%

2013

77.2%

Age (yrs) 39Tests 263Avg Mileage 45,204Top Failure Lamps, Reflectors and Electrical Equipment — 24.3%

2014

70.3%

Age (yrs) 40Tests 276Avg Mileage 44,134Top Failure Brakes — 34.8%

2015

75.3%

Age (yrs) 41Tests 283Avg Mileage 42,813Top Failure Lamps, Reflectors and Electrical Equipment — 35.3%

2016

76.3%

Age (yrs) 42Tests 299Avg Mileage 43,147Top Failure Brakes — 23.1%

2017

73.5%

Age (yrs) 43Tests 358Avg Mileage 45,024Top Failure Brakes — 37.7%

2018

75.8%

Age (yrs) 44Tests 165Avg Mileage 45,441Top Failure Brakes — 25.5%

2019

86.9%

Age (yrs) 45Tests 122Avg Mileage 45,861Top Failure Suspension — 18.9%

2020

87.0%

Age (yrs) 46Tests 100Avg Mileage 42,137Top Failure Lamps, reflectors and electrical equipment — 15.0%

2021

77.2%

Age (yrs) 47Tests 197Avg Mileage 45,641Top Failure Lamps, reflectors and electrical equipment — 19.3%

2022

78.9%

Age (yrs) 48Tests 161Avg Mileage 45,276Top Failure Lamps, reflectors and electrical equipment — 26.1%

2023

75.0%

Age (yrs) 49Tests 172Avg Mileage 46,899Top Failure Brakes — 27.9%

2024

83.6%

Age (yrs) 50Tests 207Avg Mileage 41,017Top Failure Suspension — 10.6%

MOT results for 1974 MG B by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	35	74.2%	283	42,380	Lamps, Reflectors and Electrical Equipment — 12.7%
2010	36	72.6%	274	44,403	Lamps, Reflectors and Electrical Equipment — 13.9%
2011	37	75.3%	275	42,222	Brakes — 13.1%
2012	38	76.2%	273	42,747	Lamps, Reflectors and Electrical Equipment — 13.9%
2013	39	77.2%	263	45,204	Lamps, Reflectors and Electrical Equipment — 24.3%
2014	40	70.3%	276	44,134	Brakes — 34.8%
2015	41	75.3%	283	42,813	Lamps, Reflectors and Electrical Equipment — 35.3%
2016	42	76.3%	299	43,147	Brakes — 23.1%
2017	43	73.5%	358	45,024	Brakes — 37.7%
2018	44	75.8%	165	45,441	Brakes — 25.5%
2019	45	86.9%	122	45,861	Suspension — 18.9%
2020	46	87.0%	100	42,137	Lamps, reflectors and electrical equipment — 15.0%
2021	47	77.2%	197	45,641	Lamps, reflectors and electrical equipment — 19.3%
2022	48	78.9%	161	45,276	Lamps, reflectors and electrical equipment — 26.1%
2023	49	75.0%	172	46,899	Brakes — 27.9%
2024	50	83.6%	207	41,017	Suspension — 10.6%

Common MOT Failures

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

Lamps, Reflectors and Electrical Equipment

19.8%

— Consistent

Brakes

18.6%

— Consistent

Suspension

16.6%

— Consistent

Lamps, reflectors and electrical equipment

16.0%

↓ Decreases with age

Driver's View of the Road

8.0%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Brakes	10.6% (35 yrs)	9.2% (50 yrs)	-1.4%	⚪ —
Suspension	10.2% (35 yrs)	10.6% (50 yrs)	+0.4%	⚪ —
Steering	5.7% (35 yrs)	5.3% (50 yrs)	-0.4%	⚪ —

Other Manufacture Years

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

← Back to MG B overview

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

About This Data

This page shows how MG B cars manufactured in 1974 perform at MOT as they age. Data spans from 2009 to 2024, covering 3,708 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.