MOT History from tests of petrol YAMAHA YN50s year 2005

Review the list of common YAMAHA YN50 failures below or to perform a specific mot history check on your YAMAHA then use our popular KnowYourCar service

mot history

Pass percent:72.49%

(The average a petrol YAMAHA YN50 year 2005 passes without issue)

Based on:1,225 MOT Tests

Most common failures	No# failures
Headlamp aim out of alignment	62
Exhaust is leaking and excessively noisey \|7.1.1b\|	28
Front Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	25
Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	24
Rear reflector on motorcycle missing \|1.4.1\|	22
Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	21
Registration plate issues	20
Rear position lamp does not illuminate immediately when it is switched on \|1.1.3a\|	20
Rear Brake lever has inadequate reserve travel \|3.1.3b\|	16
Rear Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	15
Steering headbearing has excessive free play \|2.2.2\|	12
Headlamp insecure \|1.2.3b\|	9
Nearside Rear Direction indicator not working \|1.5.1c\|	8
Headlamp at least one does not illuminate on main beam \|1.2.2a\|ii\|\|	8
Horn not working \|1.7.3a\|	8
Roller brake test The less effective brake control does not achieve an efficiency of 25%. \|3.3.A2b\|	8
Steering movement excessively `notchy` with the wheel raised \|2.2.1b\|	7
Offside Rear Direction indicator not working \|1.5.1c\|	6
Front position lamp does not illuminate immediately when switched on \|1.1.3a\|	6
Front wheel bearings are excessively rough \|2.3.5b\|	6
Exhaust excessively deteriorated \|7.1.1a\|	6
Direction indicators not working \|1.5.1c\|	6
Fuel system component leaking \|7.2.1a\|	6
Riders seat insecure \|6.2.1a\|	5
Rear shock absorber has inadequate damping effect. \|2.4.A.3b\|	5
Offside Front Direction indicator not working \|1.5.1c\|	5
Rear shock absorber seal failed and leaking oil \|2.4.A.1c\|	5
Rear Brake lever insecure \|3.1.2a\|	5
Nearside Rear Direction indicators not working \|1.5.1c\|	4
Nearside Front Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	4
Front position lamp insecure \|1.1.1c\|	4
Fairings insecure and likely to impede the steering \|2.1.2e\|	4
Stop lamp remains on when the brake is released \|1.3.1e\|	4
Rear reflector on motorcycle obscured \|1.4.1\|	4
Rear Rear reflector on motorcycle missing \|1.4.1\|	4
Front shock absorber seal failed and leaking oil \|2.3.3\|	4
Front Brake disc\|s\| excessively scored \|3.2.A1l\|	3
Front Front position lamp insecure \|1.1.1c\|	3
Nearside Front Direction indicator not working \|1.5.1c\|	3
Front Fairings insecure and likely to impede the steering \|2.1.2e\|	3
Rear Brake lever mounting insecure \|3.1.2a\|	3
Nearside Brake lever has inadequate reserve travel \|3.1.3b\|	3
Rear wheel bearings have excessive free play \|2.4.A.2c\|	3
Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort \|3.3.A1c\|	3
Front Brake disc\|s\| excessively worn \|3.2.A1l\|	3
Locking devices not correctly fitted which may make the motor bicycle dangerous to ride \|6.2.1h\|	3
Floor brake test The less effective brake control does not achieve an efficiency of 25%. \|3.3.C1b\|	3
Front wheel bearings have excessive free play \|2.3.5b\|	3
Offside Rear Direction indicator not working (4.4.1 (a) (ii))	3
Headlamp main beam affected by the operation of another lamp \|1.2.2c\|	2
Rear Brake lever is so short and the brake cannot be readily applied \|3.1.3c\|	2
Nearside Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	2
Lower Front position lamp does not illuminate immediately when switched on \|1.1.3a\|	2
Rear Direction indicators not working \|1.5.1c\|	2
Front position lamp damaged and function impaired \|1.1.1b\|	2
Steering movement excessively `notchy` with the weight on the lower bearing \|2.2.1a\|	2
Front Front wheel bearings have excessive free play \|2.3.5b\|	2
Front Valve stem seriously damaged \|5.2.3 \|j\|\|	2
Stop lamp not working \|4.3.1 \|a\| \|ii\|\|	2
Wheel alignment incorrect which adversely affects the handling \|2.5.1\|	2
Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort \|3.3.A1c\|	2
Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking \|6.1.1c\|	2
Front Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	2
Front Headlamp at least one does not illuminate on main beam \|1.2.2a\|ii\|\|	2
Rear Roller brake test indicates excessive fluctuation of brake effort \|3.3.A1d\|	2
Handlebar mounting clamp bolt loose \|2.1.1a\|	2
Offside Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	2
Headlamp dipped beam affected by the operation of another lamp \|1.2.2c\|	2
Wheel alignment incorrect which adversely affects the steering \|2.5.1\|	2
Front Roller brake test indicates excessive fluctuation of brake effort \|3.3.A1d\|	2
Rear Floor brake test indicates a binding brake \|3.3.C2c\|	2
Registration plate lamp issues	2
Nearside Front Shock absorber has a serious fluid leak \|5.3.2 \|b\|\|	2
Front Stop lamp not working \|4.3.1 \|a\| \|ii\|\|	2
Front Front shock absorber seal failed and leaking oil \|2.3.3\|	2
Rear wheel rotation likely to be impeded \|6.2.1b\|	2
Offside Rear Direction indicators not working \|1.5.1c\|	2
Throttle has a significant change in engine speed whilst moving the steering from lock to lock \|2.1.4\|	2
Indicator switch defective \|1.5.4\|	2
Offside Rear Motorcycle structure excessively damaged \|6.1.1a\|	2
Front suspension assembly component excessively bent \|2.3.1\|	2
Offside Front Direction indicators not working \|1.5.1c\|	2
Steering movement excessively stiff with the weight on the lower bearing \|2.2.1a\|	2
Brake lever has inadequate reserve travel \|3.1.3b\|	2
Horn not loud enough to be heard by another road user \|1.7.3a\|	2
Nearside Handlebar handgrip not secure to handlebars. \|2.1.1c\|	2
Rear Roller brake test indicates a sticking brake \|3.3.A1a\|	2
Nearside Front shock absorber seal failed and leaking oil \|2.3.3\|	2
Exhaust has a major leak of exhaust gases \|6.1.2 \|a\|\|	2
Headlamp not working on dipped beam (4.1.1 (a) (ii))	2
Stop lamp not working (4.3.1 (a) (ii))	2
Rear reflector missing (4.8.2 (a) (ii))	2
Nearside Rear Direction indicator not working (4.4.1 (a) (ii))	2
Rear Brake lever has insufficient reserve travel (1.1.2 (a))	2
All direction indicators not working (4.4.1 (a) (ii))	2
Exhaust has a major leak of exhaust gases (6.1.2 (a))	2

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.

Got suggestions? We’re improving this section all the time. If you have any suggestions, please let us know.

Most common failures	No# failures
Headlamp aim out of alignment	62
Exhaust is leaking and excessively noisey \|7.1.1b\|	28
Front Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	25
Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	24
Rear reflector on motorcycle missing \|1.4.1\|	22
Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	21
Registration plate issues	20
Rear position lamp does not illuminate immediately when it is switched on \|1.1.3a\|	20
Rear Brake lever has inadequate reserve travel \|3.1.3b\|	16
Rear Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	15
Steering headbearing has excessive free play \|2.2.2\|	12
Headlamp insecure \|1.2.3b\|	9
Nearside Rear Direction indicator not working \|1.5.1c\|	8
Headlamp at least one does not illuminate on main beam \|1.2.2a\|ii\|\|	8
Horn not working \|1.7.3a\|	8
Roller brake test The less effective brake control does not achieve an efficiency of 25%. \|3.3.A2b\|	8
Steering movement excessively `notchy` with the wheel raised \|2.2.1b\|	7
Offside Rear Direction indicator not working \|1.5.1c\|	6
Front position lamp does not illuminate immediately when switched on \|1.1.3a\|	6
Front wheel bearings are excessively rough \|2.3.5b\|	6
Exhaust excessively deteriorated \|7.1.1a\|	6
Direction indicators not working \|1.5.1c\|	6
Fuel system component leaking \|7.2.1a\|	6
Riders seat insecure \|6.2.1a\|	5
Rear shock absorber has inadequate damping effect. \|2.4.A.3b\|	5
Offside Front Direction indicator not working \|1.5.1c\|	5
Rear shock absorber seal failed and leaking oil \|2.4.A.1c\|	5
Rear Brake lever insecure \|3.1.2a\|	5
Nearside Rear Direction indicators not working \|1.5.1c\|	4
Nearside Front Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	4
Front position lamp insecure \|1.1.1c\|	4
Fairings insecure and likely to impede the steering \|2.1.2e\|	4
Stop lamp remains on when the brake is released \|1.3.1e\|	4
Rear reflector on motorcycle obscured \|1.4.1\|	4
Rear Rear reflector on motorcycle missing \|1.4.1\|	4
Front shock absorber seal failed and leaking oil \|2.3.3\|	4
Front Brake disc\|s\| excessively scored \|3.2.A1l\|	3
Front Front position lamp insecure \|1.1.1c\|	3
Nearside Front Direction indicator not working \|1.5.1c\|	3
Front Fairings insecure and likely to impede the steering \|2.1.2e\|	3
Rear Brake lever mounting insecure \|3.1.2a\|	3
Nearside Brake lever has inadequate reserve travel \|3.1.3b\|	3
Rear wheel bearings have excessive free play \|2.4.A.2c\|	3
Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort \|3.3.A1c\|	3
Front Brake disc\|s\| excessively worn \|3.2.A1l\|	3
Locking devices not correctly fitted which may make the motor bicycle dangerous to ride \|6.2.1h\|	3
Floor brake test The less effective brake control does not achieve an efficiency of 25%. \|3.3.C1b\|	3
Front wheel bearings have excessive free play \|2.3.5b\|	3
Offside Rear Direction indicator not working (4.4.1 (a) (ii))	3
Headlamp main beam affected by the operation of another lamp \|1.2.2c\|	2
Rear Brake lever is so short and the brake cannot be readily applied \|3.1.3c\|	2
Nearside Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	2
Lower Front position lamp does not illuminate immediately when switched on \|1.1.3a\|	2
Rear Direction indicators not working \|1.5.1c\|	2
Front position lamp damaged and function impaired \|1.1.1b\|	2
Steering movement excessively `notchy` with the weight on the lower bearing \|2.2.1a\|	2
Front Front wheel bearings have excessive free play \|2.3.5b\|	2
Front Valve stem seriously damaged \|5.2.3 \|j\|\|	2
Stop lamp not working \|4.3.1 \|a\| \|ii\|\|	2
Wheel alignment incorrect which adversely affects the handling \|2.5.1\|	2
Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort \|3.3.A1c\|	2
Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking \|6.1.1c\|	2
Front Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	2
Front Headlamp at least one does not illuminate on main beam \|1.2.2a\|ii\|\|	2
Rear Roller brake test indicates excessive fluctuation of brake effort \|3.3.A1d\|	2
Handlebar mounting clamp bolt loose \|2.1.1a\|	2
Offside Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	2
Headlamp dipped beam affected by the operation of another lamp \|1.2.2c\|	2
Wheel alignment incorrect which adversely affects the steering \|2.5.1\|	2
Front Roller brake test indicates excessive fluctuation of brake effort \|3.3.A1d\|	2
Rear Floor brake test indicates a binding brake \|3.3.C2c\|	2
Registration plate lamp issues	2
Nearside Front Shock absorber has a serious fluid leak \|5.3.2 \|b\|\|	2
Front Stop lamp not working \|4.3.1 \|a\| \|ii\|\|	2
Front Front shock absorber seal failed and leaking oil \|2.3.3\|	2
Rear wheel rotation likely to be impeded \|6.2.1b\|	2
Offside Rear Direction indicators not working \|1.5.1c\|	2
Throttle has a significant change in engine speed whilst moving the steering from lock to lock \|2.1.4\|	2
Indicator switch defective \|1.5.4\|	2
Offside Rear Motorcycle structure excessively damaged \|6.1.1a\|	2
Front suspension assembly component excessively bent \|2.3.1\|	2
Offside Front Direction indicators not working \|1.5.1c\|	2
Steering movement excessively stiff with the weight on the lower bearing \|2.2.1a\|	2
Brake lever has inadequate reserve travel \|3.1.3b\|	2
Horn not loud enough to be heard by another road user \|1.7.3a\|	2
Nearside Handlebar handgrip not secure to handlebars. \|2.1.1c\|	2
Rear Roller brake test indicates a sticking brake \|3.3.A1a\|	2
Nearside Front shock absorber seal failed and leaking oil \|2.3.3\|	2
Exhaust has a major leak of exhaust gases \|6.1.2 \|a\|\|	2
Headlamp not working on dipped beam (4.1.1 (a) (ii))	2
Stop lamp not working (4.3.1 (a) (ii))	2
Rear reflector missing (4.8.2 (a) (ii))	2
Nearside Rear Direction indicator not working (4.4.1 (a) (ii))	2
Rear Brake lever has insufficient reserve travel (1.1.2 (a))	2
All direction indicators not working (4.4.1 (a) (ii))	2
Exhaust has a major leak of exhaust gases (6.1.2 (a))	2

MOT History from tests of petrol YAMAHA YN50s year 2005

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