1991 Harley Davidson Unclassified — MOT History by Age

How cars manufactured in 1991 perform at MOT as they age

35 years

Current Age

88.3%

Latest Pass Rate

2,227

Total Tests (All Years)

23,594 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 Harley Davidson Unclassified as it ages.

18 yrs84.8%

→ ↓3.3%

19 yrs81.5%

→ ↑4.2%

20 yrs85.7%

→ ↓4.0%

21 yrs81.7%

→ ↓1.2%

22 yrs80.5%

→ ↑5.3%

23 yrs85.8%

→ ↓2.0%

24 yrs83.8%

→ ↑4.9%

25 yrs88.7%

→ ↑0.2%

26 yrs88.9%

→ ↓5.9%

27 yrs83.0%

→ ↑7.4%

28 yrs90.4%

→ ↓7.1%

29 yrs83.3%

→ ↑7.7%

30 yrs91.0%

→ ↓5.0%

31 yrs86.0%

→ ↓2.7%

32 yrs83.3%

→ ↑5.0%

33 yrs88.3%

📊 View as table

Age	Pass Rate	Tests
18 yrs	84.8%	198
19 yrs	81.5%	189
20 yrs	85.7%	182
21 yrs	81.7%	169
22 yrs	80.5%	149
23 yrs	85.8%	127
24 yrs	83.8%	130
25 yrs	88.7%	133
26 yrs	88.9%	153
27 yrs	83.0%	100
28 yrs	90.4%	104
29 yrs	83.3%	84
30 yrs	91.0%	144
31 yrs	86.0%	114
32 yrs	83.3%	114
33 yrs	88.3%	137

Pass Rate Trend

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

📊 View as table

Built	Pass Rate	Tests
2024 (33 yrs)	88.3%	137
2023 (32 yrs)	83.3%	114
2022 (31 yrs)	86%	114
2021 (30 yrs)	91%	144
2020 (29 yrs)	83.3%	84
2019 (28 yrs)	90.4%	104
2018 (27 yrs)	83%	100
2017 (26 yrs)	88.9%	153
2016 (25 yrs)	88.7%	133
2015 (24 yrs)	83.8%	130
2014 (23 yrs)	85.8%	127
2013 (22 yrs)	80.5%	149
2012 (21 yrs)	81.7%	169
2011 (20 yrs)	85.7%	182
2010 (19 yrs)	81.5%	189
2009 (18 yrs)	84.8%	198

Year-by-Year MOT Results

2009

84.8%

Age (yrs) 18Tests 198Avg Mileage 20,078Top Failure Motorcycle lighting and signalling — 10.6%

2010

81.5%

Age (yrs) 19Tests 189Avg Mileage 20,610Top Failure Motorcycle lighting and signalling — 12.2%

2011

85.7%

Age (yrs) 20Tests 182Avg Mileage 21,473Top Failure Motorcycle lighting and signalling — 9.3%

2012

81.7%

Age (yrs) 21Tests 169Avg Mileage 22,541Top Failure Motorcycle lighting and signalling — 10.1%

2013

80.5%

Age (yrs) 22Tests 149Avg Mileage 23,521Top Failure Motorcycle lighting and signalling — 25.5%

2014

85.8%

Age (yrs) 23Tests 127Avg Mileage 24,915Top Failure Motorcycle lighting and signalling — 20.5%

2015

83.8%

Age (yrs) 24Tests 130Avg Mileage 25,639Top Failure Motorcycle lighting and signalling — 13.1%

2016

88.7%

Age (yrs) 25Tests 133Avg Mileage 24,521Top Failure Motorcycle lighting and signalling — 15.0%

2017

88.9%

Age (yrs) 26Tests 153Avg Mileage 24,651Top Failure Motorcycle brakes — 7.8%

2018

83.0%

Age (yrs) 27Tests 100Avg Mileage 19,613Top Failure Motorcycle lamps and reflectors — 15.0%

2019

90.4%

Age (yrs) 28Tests 104Avg Mileage 25,319Top Failure Motorcycle lamps and reflectors — 6.7%

2020

83.3%

Age (yrs) 29Tests 84Avg Mileage 24,680Top Failure Motorcycle lamps and reflectors — 11.9%

2021

91.0%

Age (yrs) 30Tests 144Avg Mileage 21,577Top Failure Motorcycle lamps and reflectors — 8.3%

2022

86.0%

Age (yrs) 31Tests 114Avg Mileage 30,397Top Failure Motorcycle lamps and reflectors — 8.8%

2023

83.3%

Age (yrs) 32Tests 114Avg Mileage 24,670Top Failure Motorcycle lamps and reflectors — 15.8%

2024

88.3%

Age (yrs) 33Tests 137Avg Mileage 23,594Top Failure Motorcycle lamps and reflectors — 19.7%

MOT results for 1991 Harley Davidson Unclassified by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	18	84.8%	198	20,078	Motorcycle lighting and signalling — 10.6%
2010	19	81.5%	189	20,610	Motorcycle lighting and signalling — 12.2%
2011	20	85.7%	182	21,473	Motorcycle lighting and signalling — 9.3%
2012	21	81.7%	169	22,541	Motorcycle lighting and signalling — 10.1%
2013	22	80.5%	149	23,521	Motorcycle lighting and signalling — 25.5%
2014	23	85.8%	127	24,915	Motorcycle lighting and signalling — 20.5%
2015	24	83.8%	130	25,639	Motorcycle lighting and signalling — 13.1%
2016	25	88.7%	133	24,521	Motorcycle lighting and signalling — 15.0%
2017	26	88.9%	153	24,651	Motorcycle brakes — 7.8%
2018	27	83.0%	100	19,613	Motorcycle lamps and reflectors — 15.0%
2019	28	90.4%	104	25,319	Motorcycle lamps and reflectors — 6.7%
2020	29	83.3%	84	24,680	Motorcycle lamps and reflectors — 11.9%
2021	30	91.0%	144	21,577	Motorcycle lamps and reflectors — 8.3%
2022	31	86.0%	114	30,397	Motorcycle lamps and reflectors — 8.8%
2023	32	83.3%	114	24,670	Motorcycle lamps and reflectors — 15.8%
2024	33	88.3%	137	23,594	Motorcycle lamps and reflectors — 19.7%

Common MOT Failures

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

Motorcycle lighting and signalling

12.6%

↓ Decreases with age

Motorcycle lamps and reflectors

12.3%

↑ Increases with age

Motorcycle brakes

6.3%

↑ Increases with age

Motorcycle steering and suspension

5.4%

— Consistent

Motorcycle structure and attachments

4.8%

↑ 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	2.5% (18 yrs)	10.9% (33 yrs)	+8.4%	🔴 ↑

Other Manufacture Years

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

About This Data

This page shows how Harley Davidson Unclassified cars manufactured in 1991 perform at MOT as they age. Data spans from 2009 to 2024, covering 2,227 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.