1979 Triumph Dolomite — MOT History by Age

How cars manufactured in 1979 perform at MOT as they age

47 years

Current Age

75.0%

Latest Pass Rate

866

Total Tests (All Years)

53,555 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 1979 Triumph Dolomite as it ages.

30 yrs52.9%

→ ↑3.6%

31 yrs56.5%

→ ↑3.9%

32 yrs60.4%

→ ↓6.4%

33 yrs54.0%

→ ↑1.3%

34 yrs55.3%

→ ↑8.7%

35 yrs64.0%

→ ↓5.8%

36 yrs58.2%

→ ↓7.6%

37 yrs50.6%

→ ↑18.7%

38 yrs69.3%

→ ↑13.7%

39 yrs83.0%

→ ↓8.0%

40 yrs75.0%

📊 View as table

Age	Pass Rate	Tests
30 yrs	52.9%	104
31 yrs	56.5%	92
32 yrs	60.4%	96
33 yrs	54.0%	87
34 yrs	55.3%	94
35 yrs	64.0%	75
36 yrs	58.2%	79
37 yrs	50.6%	81
38 yrs	69.3%	75
39 yrs	83.0%	47
40 yrs	75.0%	36

Pass Rate Trend

How the 1979 Triumph Dolomite pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2019 (40 yrs)	75%	36
2018 (39 yrs)	83%	47
2017 (38 yrs)	69.3%	75
2016 (37 yrs)	50.6%	81
2015 (36 yrs)	58.2%	79
2014 (35 yrs)	64%	75
2013 (34 yrs)	55.3%	94
2012 (33 yrs)	54%	87
2011 (32 yrs)	60.4%	96
2010 (31 yrs)	56.5%	92
2009 (30 yrs)	52.9%	104

Year-by-Year MOT Results

2009High Fail Rate

52.9%

Age (yrs) 30Tests 104Avg Mileage 52,838Top Failure Lamps, Reflectors and Electrical Equipment — 32.7%

2010High Fail Rate

56.5%

Age (yrs) 31Tests 92Avg Mileage 52,788Top Failure Suspension — 25.0%

2011High Fail Rate

60.4%

Age (yrs) 32Tests 96Avg Mileage 56,338Top Failure Suspension — 22.9%

2012High Fail Rate

54.0%

Age (yrs) 33Tests 87Avg Mileage 55,240Top Failure Suspension — 32.2%

2013High Fail Rate

55.3%

Age (yrs) 34Tests 94Avg Mileage 54,588Top Failure Suspension — 88.3%

2014High Fail Rate

64.0%

Age (yrs) 35Tests 75Avg Mileage 57,936Top Failure Brakes — 58.7%

2015High Fail Rate

58.2%

Age (yrs) 36Tests 79Avg Mileage 52,081Top Failure Brakes — 51.9%

2016High Fail Rate

50.6%

Age (yrs) 37Tests 81Avg Mileage 49,748Top Failure Lamps, Reflectors and Electrical Equipment — 61.7%

2017

69.3%

Age (yrs) 38Tests 75Avg Mileage 54,831Top Failure Suspension — 49.3%

2018

83.0%

Age (yrs) 39Tests 47Avg Mileage 55,284Top Failure Suspension — 19.1%

2019

75.0%

Age (yrs) 40Tests 36Avg Mileage 53,555Top Failure Suspension — 30.6%

MOT results for 1979 Triumph Dolomite by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	30	52.9%	104	52,838	Lamps, Reflectors and Electrical Equipment — 32.7%
2010	31	56.5%	92	52,788	Suspension — 25.0%
2011	32	60.4%	96	56,338	Suspension — 22.9%
2012	33	54.0%	87	55,240	Suspension — 32.2%
2013	34	55.3%	94	54,588	Suspension — 88.3%
2014	35	64.0%	75	57,936	Brakes — 58.7%
2015	36	58.2%	79	52,081	Brakes — 51.9%
2016	37	50.6%	81	49,748	Lamps, Reflectors and Electrical Equipment — 61.7%
2017	38	69.3%	75	54,831	Suspension — 49.3%
2018	39	83.0%	47	55,284	Suspension — 19.1%
2019	40	75.0%	36	53,555	Suspension — 30.6%

Common MOT Failures

Top failure categories across all test years for 1979 Triumph Dolomite, with age trends.

Suspension

37.6%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

34.7%

↓ Decreases with age

Brakes

32.4%

↓ Decreases with age

Body, Structure and General Items

26.6%

— Consistent

Exhaust, Fuel and Emissions

19.7%

↑ 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
Suspension	21.2% (30 yrs)	30.6% (40 yrs)	+9.4%	🔴 ↑
Steering	15.4% (30 yrs)	8.3% (40 yrs)	-7.1%	🟢 ↓
Brakes	19.2% (30 yrs)	13.9% (40 yrs)	-5.3%	🟢 ↓

Other Manufacture Years

1971 1974 1975 1976 1977 1978 1979 1980 1981

← Back to Triumph Dolomite overview

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About This Data

This page shows how Triumph Dolomite cars manufactured in 1979 perform at MOT as they age. Data spans from 2009 to 2019, covering 866 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.