1970 Triumph Stag — MOT History by Age

How cars manufactured in 1970 perform at MOT as they age

56 years

Current Age

80.3%

Latest Pass Rate

508

Total Tests (All Years)

50,093 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 1970 Triumph Stag as it ages.

39 yrs67.3%

→ ↑11.9%

40 yrs79.2%

→ ↓14.4%

41 yrs64.8%

→ ↑11.2%

42 yrs76.0%

→ ↓9.3%

43 yrs66.7%

→ ↑3.1%

44 yrs69.8%

→ ↑6.0%

45 yrs75.8%

→ ↑0.5%

46 yrs76.3%

→ ↑4.0%

47 yrs80.3%

📊 View as table

Age	Pass Rate	Tests
39 yrs	67.3%	49
40 yrs	79.2%	48
41 yrs	64.8%	54
42 yrs	76.0%	50
43 yrs	66.7%	57
44 yrs	69.8%	63
45 yrs	75.8%	62
46 yrs	76.3%	59
47 yrs	80.3%	66

Pass Rate Trend

How the 1970 Triumph Stag pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2017 (47 yrs)	80.3%	66
2016 (46 yrs)	76.3%	59
2015 (45 yrs)	75.8%	62
2014 (44 yrs)	69.8%	63
2013 (43 yrs)	66.7%	57
2012 (42 yrs)	76%	50
2011 (41 yrs)	64.8%	54
2010 (40 yrs)	79.2%	48
2009 (39 yrs)	67.3%	49

Year-by-Year MOT Results

2009

67.3%

Age (yrs) 39Tests 49Avg Mileage 47,490Top Failure Steering — 18.4%

2010

79.2%

Age (yrs) 40Tests 48Avg Mileage 50,504Top Failure Lamps, Reflectors and Electrical Equipment — 14.6%

2011High Fail Rate

64.8%

Age (yrs) 41Tests 54Avg Mileage 48,110Top Failure Suspension — 22.2%

2012

76.0%

Age (yrs) 42Tests 50Avg Mileage 50,732Top Failure Lamps, Reflectors and Electrical Equipment — 14.0%

2013

66.7%

Age (yrs) 43Tests 57Avg Mileage 55,022Top Failure Suspension — 70.2%

2014

69.8%

Age (yrs) 44Tests 63Avg Mileage 50,843Top Failure Lamps, Reflectors and Electrical Equipment — 46.0%

2015

75.8%

Age (yrs) 45Tests 62Avg Mileage 48,566Top Failure Suspension — 41.9%

2016

76.3%

Age (yrs) 46Tests 59Avg Mileage 50,315Top Failure Suspension — 22.0%

2017

80.3%

Age (yrs) 47Tests 66Avg Mileage 50,093Top Failure Suspension — 18.2%

MOT results for 1970 Triumph Stag by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	39	67.3%	49	47,490	Steering — 18.4%
2010	40	79.2%	48	50,504	Lamps, Reflectors and Electrical Equipment — 14.6%
2011	41	64.8%	54	48,110	Suspension — 22.2%
2012	42	76.0%	50	50,732	Lamps, Reflectors and Electrical Equipment — 14.0%
2013	43	66.7%	57	55,022	Suspension — 70.2%
2014	44	69.8%	63	50,843	Lamps, Reflectors and Electrical Equipment — 46.0%
2015	45	75.8%	62	48,566	Suspension — 41.9%
2016	46	76.3%	59	50,315	Suspension — 22.0%
2017	47	80.3%	66	50,093	Suspension — 18.2%

Common MOT Failures

Top failure categories across all test years for 1970 Triumph Stag, with age trends.

Suspension

26.3%

— Consistent

Lamps, Reflectors and Electrical Equipment

23.6%

↓ Decreases with age

Brakes

20.2%

— Consistent

Steering

14.6%

↓ Decreases with age

Driver's View of the Road

11.4%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Steering	18.4% (39 yrs)	15.2% (47 yrs)	-3.2%	🟢 ↓
Lamps, Reflectors and Electrical Equipment	18.4% (39 yrs)	15.2% (47 yrs)	-3.2%	🟢 ↓
Suspension	18.4% (39 yrs)	18.2% (47 yrs)	-0.2%	⚪ —

Other Manufacture Years

1970 1971 1972 1973 1974 1975 1976 1977 1978

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About This Data

This page shows how Triumph Stag cars manufactured in 1970 perform at MOT as they age. Data spans from 2009 to 2017, covering 508 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.