1978 Triumph Tr 7 — MOT History by Age

How cars manufactured in 1978 perform at MOT as they age

48 years

Current Age

78.1%

Latest Pass Rate

236

Total Tests (All Years)

50,638 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 1978 Triumph Tr 7 as it ages.

31 yrs55.8%

→ ↑3.7%

32 yrs59.5%

→ ↑12.6%

33 yrs72.1%

→ ↓4.7%

34 yrs67.4%

→ ↓3.8%

35 yrs63.6%

→ ↑14.5%

38 yrs78.1%

📊 View as table

Age	Pass Rate	Tests
31 yrs	55.8%	43
32 yrs	59.5%	42
33 yrs	72.1%	43
34 yrs	67.4%	43
35 yrs	63.6%	33
38 yrs	78.1%	32

Pass Rate Trend

How the 1978 Triumph Tr 7 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2016 (38 yrs)	78.1%	32
2013 (35 yrs)	63.6%	33
2012 (34 yrs)	67.4%	43
2011 (33 yrs)	72.1%	43
2010 (32 yrs)	59.5%	42
2009 (31 yrs)	55.8%	43

Year-by-Year MOT Results

2009High Fail Rate

55.8%

Age (yrs) 31Tests 43Avg Mileage 50,429Top Failure Suspension — 25.6%

2010High Fail Rate

59.5%

Age (yrs) 32Tests 42Avg Mileage 50,820Top Failure Brakes — 26.2%

2011

72.1%

Age (yrs) 33Tests 43Avg Mileage 49,872Top Failure Brakes — 14.0%

2012

67.4%

Age (yrs) 34Tests 43Avg Mileage 47,522Top Failure Brakes — 20.9%

2013High Fail Rate

63.6%

Age (yrs) 35Tests 33Avg Mileage 46,160Top Failure Brakes — 30.3%

2016

78.1%

Age (yrs) 38Tests 32Avg Mileage 50,638Top Failure Lamps, Reflectors and Electrical Equipment — 37.5%

MOT results for 1978 Triumph Tr 7 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	31	55.8%	43	50,429	Suspension — 25.6%
2010	32	59.5%	42	50,820	Brakes — 26.2%
2011	33	72.1%	43	49,872	Brakes — 14.0%
2012	34	67.4%	43	47,522	Brakes — 20.9%
2013	35	63.6%	33	46,160	Brakes — 30.3%
2016	38	78.1%	32	50,638	Lamps, Reflectors and Electrical Equipment — 37.5%

Common MOT Failures

Top failure categories across all test years for 1978 Triumph Tr 7, with age trends.

Lamps, Reflectors and Electrical Equipment

22.4%

↑ Increases with age

Brakes

21.7%

↓ Decreases with age

Suspension

18.8%

↓ Decreases with age

Exhaust, Fuel and Emissions

17.5%

↑ Increases with age

Driver's View of the Road

13.5%

↓ 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
Lamps, Reflectors and Electrical Equipment	18.6% (31 yrs)	37.5% (38 yrs)	+18.9%	🔴 ↑
Suspension	25.6% (31 yrs)	15.6% (38 yrs)	-10.0%	🟢 ↓
Brakes	23.3% (31 yrs)	15.6% (38 yrs)	-7.7%	🟢 ↓

Other Manufacture Years

1976 1977 1978 1979 1980 1981 1982

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About This Data

This page shows how Triumph Tr 7 cars manufactured in 1978 perform at MOT as they age. Data spans from 2009 to 2016, covering 236 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.