1977 Triumph Unclassified — MOT History by Age

How cars manufactured in 1977 perform at MOT as they age

49 years

Current Age

81.6%

Latest Pass Rate

914

Total Tests (All Years)

19,803 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 Unclassified as it ages.

32 yrs77.5%

→ ↓3.3%

33 yrs74.2%

→ ↑7.6%

34 yrs81.8%

→ ↑0.3%

35 yrs82.1%

→ ↑4.0%

36 yrs86.1%

→ ↓0.6%

37 yrs85.5%

→ ↓0.9%

38 yrs84.6%

→ ↑3.6%

39 yrs88.2%

→ ↓2.6%

40 yrs85.6%

→ ↓4.0%

41 yrs81.6%

📊 View as table

Age	Pass Rate	Tests
32 yrs	77.5%	129
33 yrs	74.2%	128
34 yrs	81.8%	121
35 yrs	82.1%	106
36 yrs	86.1%	72
37 yrs	85.5%	62
38 yrs	84.6%	65
39 yrs	88.2%	85
40 yrs	85.6%	97
41 yrs	81.6%	49

Pass Rate Trend

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

📊 View as table

Built	Pass Rate	Tests
2018 (41 yrs)	81.6%	49
2017 (40 yrs)	85.6%	97
2016 (39 yrs)	88.2%	85
2015 (38 yrs)	84.6%	65
2014 (37 yrs)	85.5%	62
2013 (36 yrs)	86.1%	72
2012 (35 yrs)	82.1%	106
2011 (34 yrs)	81.8%	121
2010 (33 yrs)	74.2%	128
2009 (32 yrs)	77.5%	129

Year-by-Year MOT Results

2009

77.5%

Age (yrs) 32Tests 129Avg Mileage 29,666Top Failure Motorcycle lighting and signalling — 5.4%

2010

74.2%

Age (yrs) 33Tests 128Avg Mileage 26,225Top Failure Brakes — 9.4%

2011

81.8%

Age (yrs) 34Tests 121Avg Mileage 25,622Top Failure Lamps, Reflectors and Electrical Equipment — 9.1%

2012

82.1%

Age (yrs) 35Tests 106Avg Mileage 26,602Top Failure Suspension — 7.5%

2013

86.1%

Age (yrs) 36Tests 72Avg Mileage 19,686Top Failure Motorcycle brakes — 16.7%

2014

85.5%

Age (yrs) 37Tests 62Avg Mileage 19,394Top Failure Motorcycle brakes — 12.9%

2015

84.6%

Age (yrs) 38Tests 65Avg Mileage 17,893Top Failure Motorcycle brakes — 10.8%

2016

88.2%

Age (yrs) 39Tests 85Avg Mileage 20,949Top Failure Motorcycle brakes — 8.2%

2017

85.6%

Age (yrs) 40Tests 97Avg Mileage 22,338Top Failure Motorcycle lighting and signalling — 8.2%

2018

81.6%

Age (yrs) 41Tests 49Avg Mileage 19,803Top Failure Motorcycle lamps and reflectors — 14.3%

MOT results for 1977 Triumph Unclassified by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	32	77.5%	129	29,666	Motorcycle lighting and signalling — 5.4%
2010	33	74.2%	128	26,225	Brakes — 9.4%
2011	34	81.8%	121	25,622	Lamps, Reflectors and Electrical Equipment — 9.1%
2012	35	82.1%	106	26,602	Suspension — 7.5%
2013	36	86.1%	72	19,686	Motorcycle brakes — 16.7%
2014	37	85.5%	62	19,394	Motorcycle brakes — 12.9%
2015	38	84.6%	65	17,893	Motorcycle brakes — 10.8%
2016	39	88.2%	85	20,949	Motorcycle brakes — 8.2%
2017	40	85.6%	97	22,338	Motorcycle lighting and signalling — 8.2%
2018	41	81.6%	49	19,803	Motorcycle lamps and reflectors — 14.3%

Common MOT Failures

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

Motorcycle lamps and reflectors

14.3%

— Consistent

Motorcycle brakes

10.3%

↓ Decreases with age

Motorcycle lighting and signalling

6.6%

— Consistent

Suspension

6.4%

— Consistent

Brakes

6.3%

↓ 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
Motorcycle lighting and signalling	5.4% (32 yrs)	6.1% (41 yrs)	+0.7%	⚪ —

Other Manufacture Years

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

About This Data

This page shows how Triumph Unclassified cars manufactured in 1977 perform at MOT as they age. Data spans from 2009 to 2018, covering 914 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.