1991 Yamaha Unclassified — MOT History by Age

How cars manufactured in 1991 perform at MOT as they age

35 years

Current Age

77.1%

Latest Pass Rate

4,537

Total Tests (All Years)

24,052 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 1991 Yamaha Unclassified as it ages.

18 yrs72.4%

→ ↑1.2%

19 yrs73.6%

→ ↓0.7%

20 yrs72.9%

→ ↑0.6%

21 yrs73.5%

→ ↑2.5%

22 yrs76.0%

→ ↑1.7%

23 yrs77.7%

→ ↓1.2%

24 yrs76.5%

→ ↓2.8%

25 yrs73.7%

→ ↑1.1%

26 yrs74.8%

→ ↑4.0%

27 yrs78.8%

→ ↓3.5%

28 yrs75.3%

→ ↑6.3%

29 yrs81.6%

→ ↓3.2%

30 yrs78.4%

→ ↑11.0%

31 yrs89.4%

→ ↓11.7%

32 yrs77.7%

→ ↓0.6%

33 yrs77.1%

📊 View as table

Age	Pass Rate	Tests
18 yrs	72.4%	558
19 yrs	73.6%	469
20 yrs	72.9%	442
21 yrs	73.5%	388
22 yrs	76.0%	287
23 yrs	77.7%	242
24 yrs	76.5%	260
25 yrs	73.7%	281
26 yrs	74.8%	262
27 yrs	78.8%	193
28 yrs	75.3%	186
29 yrs	81.6%	179
30 yrs	78.4%	222
31 yrs	89.4%	170
32 yrs	77.7%	188
33 yrs	77.1%	210

Pass Rate Trend

How the 1991 Yamaha Unclassified pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2024 (33 yrs)	77.1%	210
2023 (32 yrs)	77.7%	188
2022 (31 yrs)	89.4%	170
2021 (30 yrs)	78.4%	222
2020 (29 yrs)	81.6%	179
2019 (28 yrs)	75.3%	186
2018 (27 yrs)	78.8%	193
2017 (26 yrs)	74.8%	262
2016 (25 yrs)	73.7%	281
2015 (24 yrs)	76.5%	260
2014 (23 yrs)	77.7%	242
2013 (22 yrs)	76%	287
2012 (21 yrs)	73.5%	388
2011 (20 yrs)	72.9%	442
2010 (19 yrs)	73.6%	469
2009 (18 yrs)	72.4%	558

Year-by-Year MOT Results

2009

72.4%

Age (yrs) 18Tests 558Avg Mileage 30,408Top Failure Motorcycle steering and suspension — 15.2%

2010

73.6%

Age (yrs) 19Tests 469Avg Mileage 28,426Top Failure Motorcycle lighting and signalling — 14.1%

2011

72.9%

Age (yrs) 20Tests 442Avg Mileage 29,923Top Failure Motorcycle lighting and signalling — 15.4%

2012

73.5%

Age (yrs) 21Tests 388Avg Mileage 28,878Top Failure Motorcycle lighting and signalling — 16.0%

2013

76.0%

Age (yrs) 22Tests 287Avg Mileage 28,093Top Failure Motorcycle lighting and signalling — 22.6%

2014

77.7%

Age (yrs) 23Tests 242Avg Mileage 27,537Top Failure Motorcycle lighting and signalling — 16.5%

2015

76.5%

Age (yrs) 24Tests 260Avg Mileage 27,139Top Failure Motorcycle lighting and signalling — 23.5%

2016

73.7%

Age (yrs) 25Tests 281Avg Mileage 26,556Top Failure Motorcycle lighting and signalling — 22.8%

2017

74.8%

Age (yrs) 26Tests 262Avg Mileage 27,808Top Failure Motorcycle lighting and signalling — 21.0%

2018

78.8%

Age (yrs) 27Tests 193Avg Mileage 23,869Top Failure Motorcycle brakes — 12.4%

2019

75.3%

Age (yrs) 28Tests 186Avg Mileage 25,532Top Failure Motorcycle lamps and reflectors — 17.7%

2020

81.6%

Age (yrs) 29Tests 179Avg Mileage 25,702Top Failure Motorcycle lamps and reflectors — 15.6%

2021

78.4%

Age (yrs) 30Tests 222Avg Mileage 22,977Top Failure Motorcycle lamps and reflectors — 18.5%

2022

89.4%

Age (yrs) 31Tests 170Avg Mileage 23,293Top Failure Motorcycle lamps and reflectors — 10.6%

2023

77.7%

Age (yrs) 32Tests 188Avg Mileage 24,689Top Failure Motorcycle lamps and reflectors — 18.1%

2024

77.1%

Age (yrs) 33Tests 210Avg Mileage 24,052Top Failure Motorcycle lamps and reflectors — 22.9%

MOT results for 1991 Yamaha Unclassified by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	18	72.4%	558	30,408	Motorcycle steering and suspension — 15.2%
2010	19	73.6%	469	28,426	Motorcycle lighting and signalling — 14.1%
2011	20	72.9%	442	29,923	Motorcycle lighting and signalling — 15.4%
2012	21	73.5%	388	28,878	Motorcycle lighting and signalling — 16.0%
2013	22	76.0%	287	28,093	Motorcycle lighting and signalling — 22.6%
2014	23	77.7%	242	27,537	Motorcycle lighting and signalling — 16.5%
2015	24	76.5%	260	27,139	Motorcycle lighting and signalling — 23.5%
2016	25	73.7%	281	26,556	Motorcycle lighting and signalling — 22.8%
2017	26	74.8%	262	27,808	Motorcycle lighting and signalling — 21.0%
2018	27	78.8%	193	23,869	Motorcycle brakes — 12.4%
2019	28	75.3%	186	25,532	Motorcycle lamps and reflectors — 17.7%
2020	29	81.6%	179	25,702	Motorcycle lamps and reflectors — 15.6%
2021	30	78.4%	222	22,977	Motorcycle lamps and reflectors — 18.5%
2022	31	89.4%	170	23,293	Motorcycle lamps and reflectors — 10.6%
2023	32	77.7%	188	24,689	Motorcycle lamps and reflectors — 18.1%
2024	33	77.1%	210	24,052	Motorcycle lamps and reflectors — 22.9%

Common MOT Failures

Top failure categories across all test years for 1991 Yamaha Unclassified, with age trends.

Motorcycle lighting and signalling

18.5%

↑ Increases with age

Motorcycle lamps and reflectors

16.3%

↑ Increases with age

Motorcycle steering and suspension

14.3%

↓ Decreases with age

Motorcycle brakes

11.2%

— Consistent

Motorcycle structure and attachments

8.0%

↑ 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
Motorcycle brakes	10.0% (18 yrs)	11.9% (33 yrs)	+1.9%	⚪ —

Other Manufacture Years

Looking for the best year to buy? See the full comparison on the Yamaha Unclassified page →

About This Data

This page shows how Yamaha Unclassified cars manufactured in 1991 perform at MOT as they age. Data spans from 2009 to 2024, covering 4,537 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.