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MOT History from tests of petrol YAMAHA XS400s year 1981

Review the list of common YAMAHA XS400 failures below or to perform a specific mot history check on your YAMAHA then use our popular KnowYourCar service

mot history
Pass percent:78.84%
(The average a petrol YAMAHA XS400 year 1981 passes without issue)
Based on:241 MOT Tests
Most common failuresNo# failures
Headlamp aim out of alignment13
Front Roller brake test indicates a binding brake |3.3.A1a|5
Registration plate issues5
Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d|5
Wheel alignment incorrect which adversely affects the handling |2.5.1|4
Front Brake lever has inadequate reserve travel |3.1.3b|3
Rear reflector missing |4.8.2 |a| |ii||3
Horn not working |1.7.3a|3
Riders seat insecure |6.2.1a|3
Headlamp insecure |1.2.3b|2
Steering headbearing has excessive free play |2.2.2|2
Drive chain excessively loose |6.2.1d|2
Nearside Handlebar handgrip not secure to handlebars. |2.1.1c|2
Rear reflector on motorcycle missing |1.4.1|2
Offside Front Brake lever attachment screws loose |3.1.2b|1
Horn control not readily accesible. |1.7.2a|1
Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1|1
Throttle operating incorrectly |6.2.1f|1
Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b|1
An item not tested |Manual|1
Front wheel has a loose wheel nut|s| |4.2.3a|1
Rear Front wheel spindle securing nut locking device missing |2.3.3a|1
Stop lamp does not emit a steady light |1.3.1b|1
Rear suspension bush has excessive free play |2.4.A2a|i||1
Fuel cap sealing washer deteriorated |7.2.2c|1
Front suspension assembly component loose |2.3.1|1
Stop lamp damaged and function impaired |1.3.3a|1
Brake locking device insecure |3.2.A1e|1
Rear shock absorber insecurely mounted |2.4.A.3b|1
Centre Rear Rear reflector on motorcycle missing |1.4.1|1
Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i||1
Offside Front Roller brake test indicates a binding brake |3.3.A1a|1
Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4|1
Brake master cylinder leaking hydraulic fluid |3.2.B1e|1
Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a|1
Front position lamp damaged and function impaired |1.1.1b|1
Front Brake hose leaking fluid |3.2.B4|1
Front Direction indicators flashing less than 60 times a minute |1.5.1c|1
Rear Direction indicators flashing less than 60 times a minute |1.5.1c|1
Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a|1
Headlamp at least one does not illuminate on dipped beam |1.2.2a|i||1
Nearside Exhaust is leaking and excessively noisey |7.1.1b|1
Rear wheel bearings have excessive free play |2.4.A.2c|1
Rear Roller brake test indicates a severely juddering brake |3.3.A1b|1
Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a||1
All direction indicators missing |4.4.1 |a| |ii||1
Rear Rear wheel bearings have excessive free play |2.4.A.2c|1
Brake lever has inadequate reserve travel |3.1.3b|1
Rear Brake pedal pivots excessively worn |3.1.3a|1
Horn not working |7.7 |a| |ii||1
Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b|1
Rear shock absorber has inadequate damping effect. |2.4.A.3b|1
Front Valve stem seriously damaged |5.2.3 |j||1
Offside Front shock absorber seal failed and leaking oil |2.3.3|1
Front suspension fouling which affects the movement of the front suspension. |2.3.6a|1
Front wheel spindle securing nut locking device missing |2.3.3a|1
Rear suspension bearing has excessive free play |2.4.A2a|i||1
Nearside Rear Direction indicator not working |1.5.1c|1
Nearside Rear Direction indicator insecure |1.5.3b|1
Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c|1
Drive chain worn to excess |6.2.1e|1
Upper Fuel tank leaking |7.2.1a|1
Horn is not a constant note |1.7.3c|1
Headlamp dipped beam affected by the operation of another lamp |1.2.2c|1
Headlamp main beam affected by the operation of another lamp |1.2.2c|1
Direction indicators flashing less than 60 times a minute |1.5.1c|1
Stop lamp affected by the operation of another lamp |1.3.2|1
Offside Front Brake lever has inadequate reserve travel |3.1.3b|1
Offside Front Direction indicator not working |1.5.1c|1
Rear Brake fluid reservoir leaking hydraulic fluid |3.2.B1e|1
Front Brake master cylinder leaking hydraulic fluid |3.2.B1e|1
Front Brake fluid reservoir fluid level dangerously low |3.2.B1d|1
Rear Footrest missing |6.2.1a|1
Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a|1
Headlamp aim beam image kick up to the offside |1.6|1
Front Front wheel bearings have excessive free play |2.3.5b|1
Front Front wheel bearings are excessively rough |2.3.5b|1
Nearside Rear suspension bush has excessive free play |2.4.A2a|i||1
Offside Rear suspension bush has excessive free play |2.4.A2a|i||1
Front An item not tested |Manual|1
Steering movement excessively `notchy` with the wheel raised |2.2.1b|1
Front Wheel spindle or securing nut|s| so insecure that wheel security or steering control is adversely affected split pin |5.2.1 |c| |ii||1
Rear Rear reflector missing |4.8.2 |a| |ii||1
Rear Position lamp not working |4.2.1 |a||1
Handlebar mounting insecure excess movement on bushes (2.2.1 (a) (i))1
Rear Brake indicates excessive fluctuation of brake effort hub oval or cracked? (1.2.1 (e))1
Front Brake master cylinder insecure (1.1.10 (c))1
Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii))1
Fuel cap ineffective SEAL IS SPLIT (6.1.3 (b) (i))1
Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a))1
Front Brake fluid contaminated (1.8 (a))1
Front Shock absorber has a serious fluid leak (5.3.2 (b))1
Rear Shock absorber has negligible damping effect SEIZED (5.3.2 (b))1
Front Brake excessively binding (1.2.1 (f))1
Rear Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii))1
Throttle control functioning such that safe operation of the motorcycle is adversely affected when bars turned fully to right engine revs up (6.2.7 (a) (ii))1
Drive chain horseshoe locking device incorrectly fitted Wrong way round (6.1.7 (j) (i))1

We get to these numbers by trawling through over 1 billion MOT test results since 2004 and crunched the numbers. We remove anything to do with Tyres, as they are model independent and group together common non-model specific issues. We are trying to get to a picture of what models have what issues.

Please note: We take the data from the DVSA. This data is raw and can contain typos and spelling mistakes that garages may have entered while recording a MOT result. Specifically miss-match on names of models and makes. We are constantly cleaning the data so bear with the odd issue.

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