1981 Honda Cb400n — MOT History by Age

How cars manufactured in 1981 perform at MOT as they age

45 years

Current Age

84.6%

Latest Pass Rate

378

Total Tests (All Years)

26,351 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 1981 Honda Cb400n as it ages.

28 yrs71.2%

→ ↑7.1%

29 yrs78.3%

→ ↓6.6%

30 yrs71.7%

→ ↓2.1%

31 yrs69.6%

→ ↑1.5%

32 yrs71.1%

→ ↑10.0%

33 yrs81.1%

→ ↓8.9%

34 yrs72.2%

→ ↑1.5%

35 yrs73.7%

→ ↑10.9%

36 yrs84.6%

📊 View as table

Age	Pass Rate	Tests
28 yrs	71.2%	52
29 yrs	78.3%	46
30 yrs	71.7%	46
31 yrs	69.6%	46
32 yrs	71.1%	38
33 yrs	81.1%	37
34 yrs	72.2%	36
35 yrs	73.7%	38
36 yrs	84.6%	39

Pass Rate Trend

How the 1981 Honda Cb400n pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2017 (36 yrs)	84.6%	39
2016 (35 yrs)	73.7%	38
2015 (34 yrs)	72.2%	36
2014 (33 yrs)	81.1%	37
2013 (32 yrs)	71.1%	38
2012 (31 yrs)	69.6%	46
2011 (30 yrs)	71.7%	46
2010 (29 yrs)	78.3%	46
2009 (28 yrs)	71.2%	52

Year-by-Year MOT Results

2009

71.2%

Age (yrs) 28Tests 52Avg Mileage 31,680Top Failure Motorcycle tyres and wheels — 13.5%

2010

78.3%

Age (yrs) 29Tests 46Avg Mileage 32,325Top Failure Motorcycle steering and suspension — 15.2%

2011

71.7%

Age (yrs) 30Tests 46Avg Mileage 30,106Top Failure Motorcycle lighting and signalling — 10.9%

2012

69.6%

Age (yrs) 31Tests 46Avg Mileage 30,482Top Failure Motorcycle steering and suspension — 17.4%

2013

71.1%

Age (yrs) 32Tests 38Avg Mileage 28,705Top Failure Motorcycle lighting and signalling — 23.7%

2014

81.1%

Age (yrs) 33Tests 37Avg Mileage 29,265Top Failure Motorcycle lighting and signalling — 10.8%

2015

72.2%

Age (yrs) 34Tests 36Avg Mileage 31,857Top Failure Motorcycle brakes — 19.4%

2016

73.7%

Age (yrs) 35Tests 38Avg Mileage 31,413Top Failure Motorcycle steering and suspension — 21.1%

2017

84.6%

Age (yrs) 36Tests 39Avg Mileage 26,351Top Failure Motorcycle steering and suspension — 12.8%

MOT results for 1981 Honda Cb400n by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	28	71.2%	52	31,680	Motorcycle tyres and wheels — 13.5%
2010	29	78.3%	46	32,325	Motorcycle steering and suspension — 15.2%
2011	30	71.7%	46	30,106	Motorcycle lighting and signalling — 10.9%
2012	31	69.6%	46	30,482	Motorcycle steering and suspension — 17.4%
2013	32	71.1%	38	28,705	Motorcycle lighting and signalling — 23.7%
2014	33	81.1%	37	29,265	Motorcycle lighting and signalling — 10.8%
2015	34	72.2%	36	31,857	Motorcycle brakes — 19.4%
2016	35	73.7%	38	31,413	Motorcycle steering and suspension — 21.1%
2017	36	84.6%	39	26,351	Motorcycle steering and suspension — 12.8%

Common MOT Failures

Top failure categories across all test years for 1981 Honda Cb400n, with age trends.

Motorcycle steering and suspension

14.1%

— Consistent

Motorcycle lighting and signalling

13.5%

— Consistent

Motorcycle brakes

12.6%

↓ Decreases with age

Motorcycle tyres and wheels

10.6%

— Consistent

Motorcycle drive system

8.3%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Category	At Youngest	At Oldest	Change	Trend
Motorcycle brakes	13.5% (28 yrs)	10.3% (36 yrs)	-3.2%	🟢 ↓
Motorcycle drive system	7.7% (28 yrs)	5.1% (36 yrs)	-2.6%	🟢 ↓
Motorcycle steering and suspension	11.5% (28 yrs)	12.8% (36 yrs)	+1.3%	⚪ —
Motorcycle lighting and signalling	9.6% (28 yrs)	10.3% (36 yrs)	+0.7%	⚪ —

Other Manufacture Years

1978 1979 1980 1981 1982 1983

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About This Data

This page shows how Honda Cb400n cars manufactured in 1981 perform at MOT as they age. Data spans from 2009 to 2017, covering 378 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.