1973 Triumph Stag — MOT History by Age

How cars manufactured in 1973 perform at MOT as they age

53 years

Current Age

83.9%

Latest Pass Rate

3,377

Total Tests (All Years)

53,937 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 1973 Triumph Stag as it ages.

36 yrs73.3%

→ ↓5.2%

37 yrs68.1%

→ ↑1.0%

38 yrs69.1%

→ ↑0.6%

39 yrs69.7%

→ ↑1.3%

40 yrs71.0%

→ ↓4.2%

41 yrs66.8%

→ ↑4.4%

42 yrs71.2%

→ ↑6.4%

43 yrs77.6%

→ ↓3.8%

44 yrs73.8%

→ ↓1.4%

45 yrs72.4%

→ ↑5.2%

46 yrs77.6%

→ ↑5.1%

47 yrs82.7%

→ ↓2.0%

48 yrs80.7%

→ ↓3.1%

49 yrs77.6%

→ ↑4.7%

50 yrs82.3%

→ ↑1.6%

51 yrs83.9%

📊 View as table

Age	Pass Rate	Tests
36 yrs	73.3%	251
37 yrs	68.1%	282
38 yrs	69.1%	282
39 yrs	69.7%	261
40 yrs	71.0%	259
41 yrs	66.8%	271
42 yrs	71.2%	271
43 yrs	77.6%	268
44 yrs	73.8%	271
45 yrs	72.4%	127
46 yrs	77.6%	85
47 yrs	82.7%	75
48 yrs	80.7%	181
49 yrs	77.6%	143
50 yrs	82.3%	158
51 yrs	83.9%	192

Pass Rate Trend

How the 1973 Triumph Stag pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (51 yrs)	83.9%	192
2023 (50 yrs)	82.3%	158
2022 (49 yrs)	77.6%	143
2021 (48 yrs)	80.7%	181
2020 (47 yrs)	82.7%	75
2019 (46 yrs)	77.6%	85
2018 (45 yrs)	72.4%	127
2017 (44 yrs)	73.8%	271
2016 (43 yrs)	77.6%	268
2015 (42 yrs)	71.2%	271
2014 (41 yrs)	66.8%	271
2013 (40 yrs)	71%	259
2012 (39 yrs)	69.7%	261
2011 (38 yrs)	69.1%	282
2010 (37 yrs)	68.1%	282
2009 (36 yrs)	73.3%	251

Year-by-Year MOT Results

2009

73.3%

Age (yrs) 36Tests 251Avg Mileage 49,288Top Failure Suspension — 13.9%

2010

68.1%

Age (yrs) 37Tests 282Avg Mileage 51,447Top Failure Suspension — 17.0%

2011

69.1%

Age (yrs) 38Tests 282Avg Mileage 52,281Top Failure Lamps, Reflectors and Electrical Equipment — 16.0%

2012

69.7%

Age (yrs) 39Tests 261Avg Mileage 51,832Top Failure Suspension — 14.9%

2013

71.0%

Age (yrs) 40Tests 259Avg Mileage 53,337Top Failure Lamps, Reflectors and Electrical Equipment — 34.7%

2014

66.8%

Age (yrs) 41Tests 271Avg Mileage 52,288Top Failure Suspension — 33.6%

2015

71.2%

Age (yrs) 42Tests 271Avg Mileage 51,471Top Failure Lamps, Reflectors and Electrical Equipment — 32.1%

2016

77.6%

Age (yrs) 43Tests 268Avg Mileage 50,364Top Failure Suspension — 25.0%

2017

73.8%

Age (yrs) 44Tests 271Avg Mileage 53,729Top Failure Lamps, Reflectors and Electrical Equipment — 27.7%

2018

72.4%

Age (yrs) 45Tests 127Avg Mileage 53,322Top Failure Suspension — 35.4%

2019

77.6%

Age (yrs) 46Tests 85Avg Mileage 53,755Top Failure Lamps, reflectors and electrical equipment — 20.0%

2020

82.7%

Age (yrs) 47Tests 75Avg Mileage 50,385Top Failure Lamps, reflectors and electrical equipment — 20.0%

2021

80.7%

Age (yrs) 48Tests 181Avg Mileage 51,975Top Failure Suspension — 30.4%

2022

77.6%

Age (yrs) 49Tests 143Avg Mileage 50,171Top Failure Suspension — 28.7%

2023

82.3%

Age (yrs) 50Tests 158Avg Mileage 51,816Top Failure Lamps, reflectors and electrical equipment — 20.9%

2024

83.9%

Age (yrs) 51Tests 192Avg Mileage 53,937Top Failure Suspension — 16.7%

MOT results for 1973 Triumph Stag by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	36	73.3%	251	49,288	Suspension — 13.9%
2010	37	68.1%	282	51,447	Suspension — 17.0%
2011	38	69.1%	282	52,281	Lamps, Reflectors and Electrical Equipment — 16.0%
2012	39	69.7%	261	51,832	Suspension — 14.9%
2013	40	71.0%	259	53,337	Lamps, Reflectors and Electrical Equipment — 34.7%
2014	41	66.8%	271	52,288	Suspension — 33.6%
2015	42	71.2%	271	51,471	Lamps, Reflectors and Electrical Equipment — 32.1%
2016	43	77.6%	268	50,364	Suspension — 25.0%
2017	44	73.8%	271	53,729	Lamps, Reflectors and Electrical Equipment — 27.7%
2018	45	72.4%	127	53,322	Suspension — 35.4%
2019	46	77.6%	85	53,755	Lamps, reflectors and electrical equipment — 20.0%
2020	47	82.7%	75	50,385	Lamps, reflectors and electrical equipment — 20.0%
2021	48	80.7%	181	51,975	Suspension — 30.4%
2022	49	77.6%	143	50,171	Suspension — 28.7%
2023	50	82.3%	158	51,816	Lamps, reflectors and electrical equipment — 20.9%
2024	51	83.9%	192	53,937	Suspension — 16.7%

Common MOT Failures

Top failure categories across all test years for 1973 Triumph Stag, with age trends.

Suspension

22.5%

— Consistent

Lamps, Reflectors and Electrical Equipment

22.1%

— Consistent

Lamps, reflectors and electrical equipment

19.5%

↓ Decreases with age

Brakes

17.8%

— Consistent

Steering

11.9%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Suspension	13.9% (36 yrs)	16.7% (51 yrs)	+2.8%	🔴 ↑
Steering	7.6% (36 yrs)	6.8% (51 yrs)	-0.8%	⚪ —
Brakes	9.6% (36 yrs)	9.4% (51 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 1973 perform at MOT as they age. Data spans from 2009 to 2024, covering 3,377 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.