1974 Triumph Stag — MOT History by Age

How cars manufactured in 1974 perform at MOT as they age

52 years

Current Age

80.6%

Latest Pass Rate

3,794

Total Tests (All Years)

50,346 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 1974 Triumph Stag as it ages.

35 yrs65.9%

→ ↑9.3%

36 yrs75.2%

→ ↓7.4%

37 yrs67.8%

→ ↑0.6%

38 yrs68.4%

→ ↑1.3%

39 yrs69.7%

→ ↓2.9%

40 yrs66.8%

→ ↑4.8%

41 yrs71.6%

→ ↑4.2%

42 yrs75.8%

→ ↓0.8%

43 yrs75.0%

→ ↑3.3%

44 yrs78.3%

→ ↑2.8%

45 yrs81.1%

→ ↑1.0%

46 yrs82.1%

→ ↓1.1%

47 yrs81.0%

→ ↑1.4%

48 yrs82.4%

→ ↑0.1%

49 yrs82.5%

→ ↓1.9%

50 yrs80.6%

📊 View as table

Age	Pass Rate	Tests
35 yrs	65.9%	296
36 yrs	75.2%	278
37 yrs	67.8%	298
38 yrs	68.4%	272
39 yrs	69.7%	304
40 yrs	66.8%	292
41 yrs	71.6%	324
42 yrs	75.8%	318
43 yrs	75.0%	320
44 yrs	78.3%	157
45 yrs	81.1%	127
46 yrs	82.1%	84
47 yrs	81.0%	205
48 yrs	82.4%	153
49 yrs	82.5%	160
50 yrs	80.6%	206

Pass Rate Trend

How the 1974 Triumph Stag pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (50 yrs)	80.6%	206
2023 (49 yrs)	82.5%	160
2022 (48 yrs)	82.4%	153
2021 (47 yrs)	81%	205
2020 (46 yrs)	82.1%	84
2019 (45 yrs)	81.1%	127
2018 (44 yrs)	78.3%	157
2017 (43 yrs)	75%	320
2016 (42 yrs)	75.8%	318
2015 (41 yrs)	71.6%	324
2014 (40 yrs)	66.8%	292
2013 (39 yrs)	69.7%	304
2012 (38 yrs)	68.4%	272
2011 (37 yrs)	67.8%	298
2010 (36 yrs)	75.2%	278
2009 (35 yrs)	65.9%	296

Year-by-Year MOT Results

2009

65.9%

Age (yrs) 35Tests 296Avg Mileage 49,145Top Failure Lamps, Reflectors and Electrical Equipment — 20.3%

2010

75.2%

Age (yrs) 36Tests 278Avg Mileage 49,030Top Failure Lamps, Reflectors and Electrical Equipment — 15.1%

2011

67.8%

Age (yrs) 37Tests 298Avg Mileage 52,688Top Failure Lamps, Reflectors and Electrical Equipment — 16.4%

2012

68.4%

Age (yrs) 38Tests 272Avg Mileage 51,710Top Failure Lamps, Reflectors and Electrical Equipment — 16.2%

2013

69.7%

Age (yrs) 39Tests 304Avg Mileage 51,580Top Failure Lamps, Reflectors and Electrical Equipment — 44.4%

2014

66.8%

Age (yrs) 40Tests 292Avg Mileage 52,156Top Failure Lamps, Reflectors and Electrical Equipment — 45.2%

2015

71.6%

Age (yrs) 41Tests 324Avg Mileage 51,619Top Failure Lamps, Reflectors and Electrical Equipment — 34.3%

2016

75.8%

Age (yrs) 42Tests 318Avg Mileage 51,563Top Failure Suspension — 30.5%

2017

75.0%

Age (yrs) 43Tests 320Avg Mileage 50,474Top Failure Lamps, Reflectors and Electrical Equipment — 28.4%

2018

78.3%

Age (yrs) 44Tests 157Avg Mileage 52,389Top Failure Suspension — 25.5%

2019

81.1%

Age (yrs) 45Tests 127Avg Mileage 50,363Top Failure Lamps, reflectors and electrical equipment — 21.3%

2020

82.1%

Age (yrs) 46Tests 84Avg Mileage 49,589Top Failure Lamps, reflectors and electrical equipment — 22.6%

2021

81.0%

Age (yrs) 47Tests 205Avg Mileage 56,228Top Failure Suspension — 16.1%

2022

82.4%

Age (yrs) 48Tests 153Avg Mileage 53,963Top Failure Lamps, reflectors and electrical equipment — 22.2%

2023

82.5%

Age (yrs) 49Tests 160Avg Mileage 55,160Top Failure Lamps, reflectors and electrical equipment — 15.6%

2024

80.6%

Age (yrs) 50Tests 206Avg Mileage 50,346Top Failure Brakes — 15.5%

MOT results for 1974 Triumph Stag by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	35	65.9%	296	49,145	Lamps, Reflectors and Electrical Equipment — 20.3%
2010	36	75.2%	278	49,030	Lamps, Reflectors and Electrical Equipment — 15.1%
2011	37	67.8%	298	52,688	Lamps, Reflectors and Electrical Equipment — 16.4%
2012	38	68.4%	272	51,710	Lamps, Reflectors and Electrical Equipment — 16.2%
2013	39	69.7%	304	51,580	Lamps, Reflectors and Electrical Equipment — 44.4%
2014	40	66.8%	292	52,156	Lamps, Reflectors and Electrical Equipment — 45.2%
2015	41	71.6%	324	51,619	Lamps, Reflectors and Electrical Equipment — 34.3%
2016	42	75.8%	318	51,563	Suspension — 30.5%
2017	43	75.0%	320	50,474	Lamps, Reflectors and Electrical Equipment — 28.4%
2018	44	78.3%	157	52,389	Suspension — 25.5%
2019	45	81.1%	127	50,363	Lamps, reflectors and electrical equipment — 21.3%
2020	46	82.1%	84	49,589	Lamps, reflectors and electrical equipment — 22.6%
2021	47	81.0%	205	56,228	Suspension — 16.1%
2022	48	82.4%	153	53,963	Lamps, reflectors and electrical equipment — 22.2%
2023	49	82.5%	160	55,160	Lamps, reflectors and electrical equipment — 15.6%
2024	50	80.6%	206	50,346	Brakes — 15.5%

Common MOT Failures

Top failure categories across all test years for 1974 Triumph Stag, with age trends.

Lamps, Reflectors and Electrical Equipment

26.3%

— Consistent

Suspension

20.4%

↓ Decreases with age

Lamps, reflectors and electrical equipment

18.3%

↓ Decreases with age

Brakes

17.2%

— Consistent

Steering

10.6%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Suspension	15.5% (35 yrs)	11.7% (50 yrs)	-3.8%	🟢 ↓
Brakes	12.8% (35 yrs)	15.5% (50 yrs)	+2.7%	🔴 ↑
Steering	8.4% (35 yrs)	6.8% (50 yrs)	-1.6%	⚪ —

Other Manufacture Years

1970 1971 1972 1973 1974 1975 1976 1977 1978

← Back to Triumph Stag overview

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About This Data

This page shows how Triumph Stag cars manufactured in 1974 perform at MOT as they age. Data spans from 2009 to 2024, covering 3,794 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.