1979 Yamaha Rd400 — MOT History by Age

How cars manufactured in 1979 perform at MOT as they age

47 years

Current Age

90.3%

Latest Pass Rate

443

Total Tests (All Years)

22,085 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 1979 Yamaha Rd400 as it ages.

30 yrs77.8%

→ ↑0.3%

31 yrs78.1%

→ ↑12.5%

32 yrs90.6%

→ ↓2.2%

33 yrs88.4%

→ ↓0.4%

34 yrs88.0%

→ ↑1.8%

35 yrs89.8%

→ ↓4.7%

36 yrs85.1%

→ ↑10.6%

37 yrs95.7%

→ ↓2.1%

38 yrs93.6%

→ ↓0.3%

39 yrs93.3%

→ ↓3.0%

40 yrs90.3%

📊 View as table

Age	Pass Rate	Tests
30 yrs	77.8%	36
31 yrs	78.1%	32
32 yrs	90.6%	32
33 yrs	88.4%	43
34 yrs	88.0%	50
35 yrs	89.8%	49
36 yrs	85.1%	47
37 yrs	95.7%	46
38 yrs	93.6%	47
39 yrs	93.3%	30
40 yrs	90.3%	31

Pass Rate Trend

How the 1979 Yamaha Rd400 pass rate changes as it ages, from first MOT to most recent.

📊 View as table

Built	Pass Rate	Tests
2019 (40 yrs)	90.3%	31
2018 (39 yrs)	93.3%	30
2017 (38 yrs)	93.6%	47
2016 (37 yrs)	95.7%	46
2015 (36 yrs)	85.1%	47
2014 (35 yrs)	89.8%	49
2013 (34 yrs)	88%	50
2012 (33 yrs)	88.4%	43
2011 (32 yrs)	90.6%	32
2010 (31 yrs)	78.1%	32
2009 (30 yrs)	77.8%	36

Year-by-Year MOT Results

2009

77.8%

Age (yrs) 30Tests 36Avg Mileage 22,604Top Failure Motorcycle lighting and signalling — 16.7%

2010

78.1%

Age (yrs) 31Tests 32Avg Mileage 23,474Top Failure Motorcycle lighting and signalling — 15.6%

2011

90.6%

Age (yrs) 32Tests 32Avg Mileage 22,915Top Failure Motorcycle lighting and signalling — 6.3%

2012

88.4%

Age (yrs) 33Tests 43Avg Mileage 19,466Top Failure Motorcycle drive system — 7.0%

2013

88.0%

Age (yrs) 34Tests 50Avg Mileage 22,742Top Failure Motorcycle lighting and signalling — 12.0%

2014

89.8%

Age (yrs) 35Tests 49Avg Mileage 21,167Top Failure Motorcycle lighting and signalling — 18.4%

2015

85.1%

Age (yrs) 36Tests 47Avg Mileage 23,667Top Failure Motorcycle lighting and signalling — 38.3%

2016

95.7%

Age (yrs) 37Tests 46Avg Mileage 24,083Top Failure Motorcycle lighting and signalling — 4.3%

2017

93.6%

Age (yrs) 38Tests 47Avg Mileage 23,745Top Failure Motorcycle drive system — 4.3%

2018

93.3%

Age (yrs) 39Tests 30Avg Mileage 22,185Top Failure Motorcycle brakes — 13.3%

2019

90.3%

Age (yrs) 40Tests 31Avg Mileage 22,085Top Failure Motorcycle lamps and reflectors — 12.9%

MOT results for 1979 Yamaha Rd400 by test year
Test Year▲	Age (yrs)▲▼	Pass Rate▲▼	Tests▲▼	Avg Mileage▲▼	Top Failure▲▼
2009	30	77.8%	36	22,604	Motorcycle lighting and signalling — 16.7%
2010	31	78.1%	32	23,474	Motorcycle lighting and signalling — 15.6%
2011	32	90.6%	32	22,915	Motorcycle lighting and signalling — 6.3%
2012	33	88.4%	43	19,466	Motorcycle drive system — 7.0%
2013	34	88.0%	50	22,742	Motorcycle lighting and signalling — 12.0%
2014	35	89.8%	49	21,167	Motorcycle lighting and signalling — 18.4%
2015	36	85.1%	47	23,667	Motorcycle lighting and signalling — 38.3%
2016	37	95.7%	46	24,083	Motorcycle lighting and signalling — 4.3%
2017	38	93.6%	47	23,745	Motorcycle drive system — 4.3%
2018	39	93.3%	30	22,185	Motorcycle brakes — 13.3%
2019	40	90.3%	31	22,085	Motorcycle lamps and reflectors — 12.9%

Common MOT Failures

Top failure categories across all test years for 1979 Yamaha Rd400, with age trends.

Motorcycle lighting and signalling

13.4%

↓ Decreases with age

Motorcycle lamps and reflectors

11.5%

— Consistent

Motorcycle brakes

7.7%

↑ Increases with age

Motorcycle steering and suspension

6.7%

↓ Decreases with age

Motorcycle tyres and wheels

5.8%

— Consistent

How Failures Change With Age

Comparing failure rates between the youngest and oldest test years.

Not enough data to compare failures across ages.

Other Manufacture Years

1976 1977 1978 1979 1980

← Back to Yamaha Rd400 overview

Looking for the best year to buy? See the full comparison on the Yamaha Rd400 page →

About This Data

This page shows how Yamaha Rd400 cars manufactured in 1979 perform at MOT as they age. Data spans from 2009 to 2019, covering 443 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.