1966 Triumph Herald — MOT History by Age

How cars manufactured in 1966 perform at MOT as they age

60 years

Current Age

76.9%

Latest Pass Rate

475

Total Tests (All Years)

44,260 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 1966 Triumph Herald as it ages.

43 yrs68.1%

→ ↓10.0%

44 yrs58.1%

→ ↑1.5%

45 yrs59.6%

→ ↑11.8%

46 yrs71.4%

→ ↑5.8%

47 yrs77.2%

→ ↓13.4%

48 yrs63.8%

→ ↑16.6%

49 yrs80.4%

→ ↓9.0%

50 yrs71.4%

→ ↑5.5%

51 yrs76.9%

📊 View as table

Age	Pass Rate	Tests
43 yrs	68.1%	47
44 yrs	58.1%	43
45 yrs	59.6%	57
46 yrs	71.4%	49
47 yrs	77.2%	57
48 yrs	63.8%	58
49 yrs	80.4%	56
50 yrs	71.4%	56
51 yrs	76.9%	52

Pass Rate Trend

How the 1966 Triumph Herald pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2017 (51 yrs)	76.9%	52
2016 (50 yrs)	71.4%	56
2015 (49 yrs)	80.4%	56
2014 (48 yrs)	63.8%	58
2013 (47 yrs)	77.2%	57
2012 (46 yrs)	71.4%	49
2011 (45 yrs)	59.6%	57
2010 (44 yrs)	58.1%	43
2009 (43 yrs)	68.1%	47

Year-by-Year MOT Results

2009

68.1%

Age (yrs) 43Tests 47Avg Mileage 46,518Top Failure Brakes — 17.0%

2010High Fail Rate

58.1%

Age (yrs) 44Tests 43Avg Mileage 49,179Top Failure Suspension — 27.9%

2011High Fail Rate

59.6%

Age (yrs) 45Tests 57Avg Mileage 50,087Top Failure Brakes — 24.6%

2012

71.4%

Age (yrs) 46Tests 49Avg Mileage 46,863Top Failure Brakes — 16.3%

2013

77.2%

Age (yrs) 47Tests 57Avg Mileage 48,487Top Failure Suspension — 15.8%

2014High Fail Rate

63.8%

Age (yrs) 48Tests 58Avg Mileage 53,307Top Failure Brakes — 55.2%

2015

80.4%

Age (yrs) 49Tests 56Avg Mileage 45,472Top Failure Brakes — 23.2%

2016

71.4%

Age (yrs) 50Tests 56Avg Mileage 42,477Top Failure Brakes — 32.1%

2017

76.9%

Age (yrs) 51Tests 52Avg Mileage 44,260Top Failure Body, Structure and General Items — 25.0%

MOT results for 1966 Triumph Herald by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	43	68.1%	47	46,518	Brakes — 17.0%
2010	44	58.1%	43	49,179	Suspension — 27.9%
2011	45	59.6%	57	50,087	Brakes — 24.6%
2012	46	71.4%	49	46,863	Brakes — 16.3%
2013	47	77.2%	57	48,487	Suspension — 15.8%
2014	48	63.8%	58	53,307	Brakes — 55.2%
2015	49	80.4%	56	45,472	Brakes — 23.2%
2016	50	71.4%	56	42,477	Brakes — 32.1%
2017	51	76.9%	52	44,260	Body, Structure and General Items — 25.0%

Common MOT Failures

Top failure categories across all test years for 1966 Triumph Herald, with age trends.

Brakes

25.5%

↑ Increases with age

Suspension

18.1%

↑ Increases with age

Lamps, Reflectors and Electrical Equipment

15.7%

— Consistent

Seat Belts and Supplementary Restraint Systems

15.4%

— Consistent

Body, Structure and General Items

14.0%

↑ 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
Body, Structure and General Items	8.5% (43 yrs)	25.0% (51 yrs)	+16.5%	🔴 ↑
Suspension	10.6% (43 yrs)	15.4% (51 yrs)	+4.8%	🔴 ↑
Brakes	17.0% (43 yrs)	21.2% (51 yrs)	+4.2%	🔴 ↑
Lamps, Reflectors and Electrical Equipment	14.9% (43 yrs)	15.4% (51 yrs)	+0.5%	⚪ —

Other Manufacture Years

1964 1965 1966 1967 1968 1969 1970 1971

← Back to Triumph Herald overview

Looking for the best year to buy? See the full comparison on the Triumph Herald page →

About This Data

This page shows how Triumph Herald cars manufactured in 1966 perform at MOT as they age. Data spans from 2009 to 2017, covering 475 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.