1977 Triumph Bonneville — MOT History by Age

How cars manufactured in 1977 perform at MOT as they age

49 years

Current Age

84.8%

Latest Pass Rate

985

Total Tests (All Years)

15,003 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 1977 Triumph Bonneville as it ages.

32 yrs77.8%

→ ↑7.5%

33 yrs85.3%

→ ↑2.7%

34 yrs88.0%

→ ↓0.9%

35 yrs87.1%

→ ↓2.0%

36 yrs85.1%

→ ↑2.8%

37 yrs87.9%

→ ↑2.6%

38 yrs90.5%

→ ↓5.6%

39 yrs84.9%

→ ↑4.4%

40 yrs89.3%

→ ↓4.5%

41 yrs84.8%

📊 View as table

Age	Pass Rate	Tests
32 yrs	77.8%	135
33 yrs	85.3%	109
34 yrs	88.0%	108
35 yrs	87.1%	101
36 yrs	85.1%	94
37 yrs	87.9%	91
38 yrs	90.5%	105
39 yrs	84.9%	93
40 yrs	89.3%	103
41 yrs	84.8%	46

Pass Rate Trend

How the 1977 Triumph Bonneville pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2018 (41 yrs)	84.8%	46
2017 (40 yrs)	89.3%	103
2016 (39 yrs)	84.9%	93
2015 (38 yrs)	90.5%	105
2014 (37 yrs)	87.9%	91
2013 (36 yrs)	85.1%	94
2012 (35 yrs)	87.1%	101
2011 (34 yrs)	88%	108
2010 (33 yrs)	85.3%	109
2009 (32 yrs)	77.8%	135

Year-by-Year MOT Results

2009

77.8%

Age (yrs) 32Tests 135Avg Mileage 16,588Top Failure Motorcycle lighting and signalling — 13.3%

2010

85.3%

Age (yrs) 33Tests 109Avg Mileage 18,512Top Failure Motorcycle lighting and signalling — 10.1%

2011

88.0%

Age (yrs) 34Tests 108Avg Mileage 16,173Top Failure Motorcycle lighting and signalling — 4.6%

2012

87.1%

Age (yrs) 35Tests 101Avg Mileage 16,780Top Failure Motorcycle lighting and signalling — 8.9%

2013

85.1%

Age (yrs) 36Tests 94Avg Mileage 16,359Top Failure Motorcycle lighting and signalling — 13.8%

2014

87.9%

Age (yrs) 37Tests 91Avg Mileage 16,368Top Failure Motorcycle lighting and signalling — 16.5%

2015

90.5%

Age (yrs) 38Tests 105Avg Mileage 16,431Top Failure Motorcycle steering and suspension — 7.6%

2016

84.9%

Age (yrs) 39Tests 93Avg Mileage 16,267Top Failure Motorcycle lighting and signalling — 8.6%

2017

89.3%

Age (yrs) 40Tests 103Avg Mileage 16,641Top Failure Motorcycle lighting and signalling — 7.8%

2018

84.8%

Age (yrs) 41Tests 46Avg Mileage 15,003Top Failure Motorcycle brakes — 8.7%

MOT results for 1977 Triumph Bonneville by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	32	77.8%	135	16,588	Motorcycle lighting and signalling — 13.3%
2010	33	85.3%	109	18,512	Motorcycle lighting and signalling — 10.1%
2011	34	88.0%	108	16,173	Motorcycle lighting and signalling — 4.6%
2012	35	87.1%	101	16,780	Motorcycle lighting and signalling — 8.9%
2013	36	85.1%	94	16,359	Motorcycle lighting and signalling — 13.8%
2014	37	87.9%	91	16,368	Motorcycle lighting and signalling — 16.5%
2015	38	90.5%	105	16,431	Motorcycle steering and suspension — 7.6%
2016	39	84.9%	93	16,267	Motorcycle lighting and signalling — 8.6%
2017	40	89.3%	103	16,641	Motorcycle lighting and signalling — 7.8%
2018	41	84.8%	46	15,003	Motorcycle brakes — 8.7%

Common MOT Failures

Top failure categories across all test years for 1977 Triumph Bonneville, with age trends.

Motorcycle lighting and signalling

9.6%

↓ Decreases with age

Motorcycle brakes

5.1%

— Consistent

Motorcycle steering and suspension

4.7%

— Consistent

Motorcycle tyres and wheels

3.1%

↓ Decreases with age

Motorcycle suspension

2.2%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Motorcycle lighting and signalling	13.3% (32 yrs)	6.5% (41 yrs)	-6.8%	🟢 ↓
Motorcycle steering and suspension	5.2% (32 yrs)	2.2% (41 yrs)	-3.0%	🟢 ↓
Motorcycle brakes	6.7% (32 yrs)	8.7% (41 yrs)	+2.0%	⚪ —

Other Manufacture Years

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

About This Data

This page shows how Triumph Bonneville cars manufactured in 1977 perform at MOT as they age. Data spans from 2009 to 2018, covering 985 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.