1977 Triumph Tr 7 — MOT History by Age

How cars manufactured in 1977 perform at MOT as they age

49 years

Current Age

69.7%

Latest Pass Rate

753

Total Tests (All Years)

47,975 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 Triumph Tr 7 as it ages.

32 yrs65.3%

→ ↑2.5%

33 yrs67.8%

→ ↓5.6%

34 yrs62.2%

→ ↓0.1%

35 yrs62.1%

→ ↓7.3%

36 yrs54.8%

→ ↑5.2%

37 yrs60.0%

→ ↑16.3%

38 yrs76.3%

→ ↓2.8%

39 yrs73.5%

→ ↑5.3%

40 yrs78.8%

→ ↓3.8%

41 yrs75.0%

→ ↓5.3%

44 yrs69.7%

📊 View as table

Age	Pass Rate	Tests
32 yrs	65.3%	95
33 yrs	67.8%	90
34 yrs	62.2%	82
35 yrs	62.1%	66
36 yrs	54.8%	62
37 yrs	60.0%	75
38 yrs	76.3%	76
39 yrs	73.5%	68
40 yrs	78.8%	66
41 yrs	75.0%	40
44 yrs	69.7%	33

Pass Rate Trend

How the 1977 Triumph Tr 7 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2021 (44 yrs)	69.7%	33
2018 (41 yrs)	75%	40
2017 (40 yrs)	78.8%	66
2016 (39 yrs)	73.5%	68
2015 (38 yrs)	76.3%	76
2014 (37 yrs)	60%	75
2013 (36 yrs)	54.8%	62
2012 (35 yrs)	62.1%	66
2011 (34 yrs)	62.2%	82
2010 (33 yrs)	67.8%	90
2009 (32 yrs)	65.3%	95

Year-by-Year MOT Results

2009

65.3%

Age (yrs) 32Tests 95Avg Mileage 49,787Top Failure Suspension — 17.9%

2010

67.8%

Age (yrs) 33Tests 90Avg Mileage 46,079Top Failure Suspension — 18.9%

2011High Fail Rate

62.2%

Age (yrs) 34Tests 82Avg Mileage 43,749Top Failure Brakes — 20.7%

2012High Fail Rate

62.1%

Age (yrs) 35Tests 66Avg Mileage 49,778Top Failure Brakes — 25.8%

2013High Fail Rate

54.8%

Age (yrs) 36Tests 62Avg Mileage 46,142Top Failure Brakes — 46.8%

2014High Fail Rate

60.0%

Age (yrs) 37Tests 75Avg Mileage 53,920Top Failure Lamps, Reflectors and Electrical Equipment — 37.3%

2015

76.3%

Age (yrs) 38Tests 76Avg Mileage 45,587Top Failure Suspension — 35.5%

2016

73.5%

Age (yrs) 39Tests 68Avg Mileage 46,750Top Failure Suspension — 29.4%

2017

78.8%

Age (yrs) 40Tests 66Avg Mileage 49,679Top Failure Suspension — 36.4%

2018

75.0%

Age (yrs) 41Tests 40Avg Mileage 50,230Top Failure Brakes — 27.5%

2021

69.7%

Age (yrs) 44Tests 33Avg Mileage 47,975Top Failure Noise, emissions and leaks — 30.3%

MOT results for 1977 Triumph Tr 7 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	32	65.3%	95	49,787	Suspension — 17.9%
2010	33	67.8%	90	46,079	Suspension — 18.9%
2011	34	62.2%	82	43,749	Brakes — 20.7%
2012	35	62.1%	66	49,778	Brakes — 25.8%
2013	36	54.8%	62	46,142	Brakes — 46.8%
2014	37	60.0%	75	53,920	Lamps, Reflectors and Electrical Equipment — 37.3%
2015	38	76.3%	76	45,587	Suspension — 35.5%
2016	39	73.5%	68	46,750	Suspension — 29.4%
2017	40	78.8%	66	49,679	Suspension — 36.4%
2018	41	75.0%	40	50,230	Brakes — 27.5%
2021	44	69.7%	33	47,975	Noise, emissions and leaks — 30.3%

Common MOT Failures

Top failure categories across all test years for 1977 Triumph Tr 7, with age trends.

Noise, emissions and leaks

30.3%

— Consistent

Brakes

26.3%

↑ Increases with age

Suspension

24.9%

— Consistent

Lamps, Reflectors and Electrical Equipment

23.6%

↑ Increases with age

Lamps, reflectors and electrical equipment

20.9%

↑ Increases with age

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Brakes	17.9% (32 yrs)	21.2% (44 yrs)	+3.3%	🔴 ↑
Suspension	17.9% (32 yrs)	15.2% (44 yrs)	-2.7%	🟢 ↓

Other Manufacture Years

1976 1977 1978 1979 1980 1981 1982

← Back to Triumph Tr 7 overview

Looking for the best year to buy? See the full comparison on the Triumph Tr 7 page →

About This Data

This page shows how Triumph Tr 7 cars manufactured in 1977 perform at MOT as they age. Data spans from 2009 to 2021, covering 753 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.