1975 Triumph Dolomite — MOT History by Age

How cars manufactured in 1975 perform at MOT as they age

51 years

Current Age

77.4%

Latest Pass Rate

503

Total Tests (All Years)

51,954 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 Dolomite as it ages.

34 yrs67.2%

→ ↑4.7%

35 yrs71.9%

→ ↓11.1%

36 yrs60.8%

→ ↑6.5%

37 yrs67.3%

→ ↓17.3%

38 yrs50.0%

→ ↑9.6%

39 yrs59.6%

→ ↑14.9%

40 yrs74.5%

→ ↓11.6%

41 yrs62.9%

→ ↑14.5%

42 yrs77.4%

📊 View as table

Age	Pass Rate	Tests
34 yrs	67.2%	64
35 yrs	71.9%	57
36 yrs	60.8%	51
37 yrs	67.3%	49
38 yrs	50.0%	60
39 yrs	59.6%	47
40 yrs	74.5%	51
41 yrs	62.9%	62
42 yrs	77.4%	62

Pass Rate Trend

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

📊 View as table

Built	Pass Rate	Tests
2017 (42 yrs)	77.4%	62
2016 (41 yrs)	62.9%	62
2015 (40 yrs)	74.5%	51
2014 (39 yrs)	59.6%	47
2013 (38 yrs)	50%	60
2012 (37 yrs)	67.3%	49
2011 (36 yrs)	60.8%	51
2010 (35 yrs)	71.9%	57
2009 (34 yrs)	67.2%	64

Year-by-Year MOT Results

2009

67.2%

Age (yrs) 34Tests 64Avg Mileage 48,967Top Failure Brakes — 18.8%

2010

71.9%

Age (yrs) 35Tests 57Avg Mileage 52,439Top Failure Suspension — 19.3%

2011High Fail Rate

60.8%

Age (yrs) 36Tests 51Avg Mileage 54,516Top Failure Brakes — 23.5%

2012

67.3%

Age (yrs) 37Tests 49Avg Mileage 57,609Top Failure Suspension — 22.4%

2013High Fail Rate

50.0%

Age (yrs) 38Tests 60Avg Mileage 56,475Top Failure Brakes — 88.3%

2014High Fail Rate

59.6%

Age (yrs) 39Tests 47Avg Mileage 56,635Top Failure Brakes — 44.7%

2015

74.5%

Age (yrs) 40Tests 51Avg Mileage 57,084Top Failure Lamps, Reflectors and Electrical Equipment — 56.9%

2016High Fail Rate

62.9%

Age (yrs) 41Tests 62Avg Mileage 57,454Top Failure Suspension — 50.0%

2017

77.4%

Age (yrs) 42Tests 62Avg Mileage 51,954Top Failure Suspension — 33.9%

MOT results for 1975 Triumph Dolomite by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	34	67.2%	64	48,967	Brakes — 18.8%
2010	35	71.9%	57	52,439	Suspension — 19.3%
2011	36	60.8%	51	54,516	Brakes — 23.5%
2012	37	67.3%	49	57,609	Suspension — 22.4%
2013	38	50.0%	60	56,475	Brakes — 88.3%
2014	39	59.6%	47	56,635	Brakes — 44.7%
2015	40	74.5%	51	57,084	Lamps, Reflectors and Electrical Equipment — 56.9%
2016	41	62.9%	62	57,454	Suspension — 50.0%
2017	42	77.4%	62	51,954	Suspension — 33.9%

Common MOT Failures

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

Suspension

35.8%

↑ Increases with age

Brakes

33.2%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

31.1%

— Consistent

Body, Structure and General Items

17.6%

— Consistent

Steering

17.3%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Suspension	12.5% (34 yrs)	33.9% (42 yrs)	+21.4%	🔴 ↑
Brakes	18.8% (34 yrs)	25.8% (42 yrs)	+7.0%	🔴 ↑
Lamps, Reflectors and Electrical Equipment	17.2% (34 yrs)	19.4% (42 yrs)	+2.2%	🔴 ↑
Exhaust, Fuel and Emissions	6.3% (34 yrs)	8.1% (42 yrs)	+1.8%	⚪ —
Steering	10.9% (34 yrs)	11.3% (42 yrs)	+0.4%	⚪ —

Other Manufacture Years

1971 1974 1975 1976 1977 1978 1979 1980 1981

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About This Data

This page shows how Triumph Dolomite cars manufactured in 1975 perform at MOT as they age. Data spans from 2009 to 2017, covering 503 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.