1975 Triumph Unclassified — MOT History by Age

How cars manufactured in 1975 perform at MOT as they age

51 years

Current Age

87.2%

Latest Pass Rate

1,022

Total Tests (All Years)

28,939 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 1975 Triumph Unclassified as it ages.

34 yrs76.3%

→ ↓0.9%

35 yrs75.4%

→ ↑8.6%

36 yrs84.0%

→ ↓5.8%

37 yrs78.2%

→ ↑10.7%

38 yrs88.9%

→ ↑0.5%

39 yrs89.4%

→ ↑3.8%

40 yrs93.2%

→ ↓7.5%

41 yrs85.7%

→ ↑1.7%

42 yrs87.4%

→ ↓0.2%

43 yrs87.2%

📊 View as table

Age	Pass Rate	Tests
34 yrs	76.3%	139
35 yrs	75.4%	130
36 yrs	84.0%	125
37 yrs	78.2%	101
38 yrs	88.9%	72
39 yrs	89.4%	66
40 yrs	93.2%	88
41 yrs	85.7%	119
42 yrs	87.4%	135
43 yrs	87.2%	47

Pass Rate Trend

How the 1975 Triumph Unclassified pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2018 (43 yrs)	87.2%	47
2017 (42 yrs)	87.4%	135
2016 (41 yrs)	85.7%	119
2015 (40 yrs)	93.2%	88
2014 (39 yrs)	89.4%	66
2013 (38 yrs)	88.9%	72
2012 (37 yrs)	78.2%	101
2011 (36 yrs)	84%	125
2010 (35 yrs)	75.4%	130
2009 (34 yrs)	76.3%	139

Year-by-Year MOT Results

2009

76.3%

Age (yrs) 34Tests 139Avg Mileage 36,320Top Failure Brakes — 10.8%

2010

75.4%

Age (yrs) 35Tests 130Avg Mileage 29,879Top Failure Lamps, Reflectors and Electrical Equipment — 8.5%

2011

84.0%

Age (yrs) 36Tests 125Avg Mileage 23,327Top Failure Motorcycle steering and suspension — 6.4%

2012

78.2%

Age (yrs) 37Tests 101Avg Mileage 26,569Top Failure Suspension — 6.9%

2013

88.9%

Age (yrs) 38Tests 72Avg Mileage 22,748Top Failure Suspension — 8.3%

2014

89.4%

Age (yrs) 39Tests 66Avg Mileage 22,773Top Failure Lamps, Reflectors and Electrical Equipment — 6.1%

2015

93.2%

Age (yrs) 40Tests 88Avg Mileage 28,741Top Failure Brakes — 5.7%

2016

85.7%

Age (yrs) 41Tests 119Avg Mileage 25,161Top Failure Lamps, Reflectors and Electrical Equipment — 10.9%

2017

87.4%

Age (yrs) 42Tests 135Avg Mileage 22,022Top Failure Suspension — 8.1%

2018

87.2%

Age (yrs) 43Tests 47Avg Mileage 28,939Top Failure Brakes — 10.6%

MOT results for 1975 Triumph Unclassified by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	34	76.3%	139	36,320	Brakes — 10.8%
2010	35	75.4%	130	29,879	Lamps, Reflectors and Electrical Equipment — 8.5%
2011	36	84.0%	125	23,327	Motorcycle steering and suspension — 6.4%
2012	37	78.2%	101	26,569	Suspension — 6.9%
2013	38	88.9%	72	22,748	Suspension — 8.3%
2014	39	89.4%	66	22,773	Lamps, Reflectors and Electrical Equipment — 6.1%
2015	40	93.2%	88	28,741	Brakes — 5.7%
2016	41	85.7%	119	25,161	Lamps, Reflectors and Electrical Equipment — 10.9%
2017	42	87.4%	135	22,022	Suspension — 8.1%
2018	43	87.2%	47	28,939	Brakes — 10.6%

Common MOT Failures

Top failure categories across all test years for 1975 Triumph Unclassified, with age trends.

Lamps, Reflectors and Electrical Equipment

6.5%

↑ Increases with age

Suspension

6.1%

↓ Decreases with age

Brakes

5.9%

— Consistent

Motorcycle lighting and signalling

4.9%

— Consistent

Motorcycle steering and suspension

4.5%

↓ 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	10.1% (34 yrs)	4.3% (43 yrs)	-5.8%	🟢 ↓
Lamps, Reflectors and Electrical Equipment	6.5% (34 yrs)	10.6% (43 yrs)	+4.1%	🔴 ↑
Motorcycle lighting and signalling	5.0% (34 yrs)	4.3% (43 yrs)	-0.7%	⚪ —
Brakes	10.8% (34 yrs)	10.6% (43 yrs)	-0.2%	⚪ —

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 1975 perform at MOT as they age. Data spans from 2009 to 2018, covering 1,022 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.