MOT History from tests of petrol YAMAHA YN50s year 2000

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:71.83%

(The average a petrol YAMAHA YN50 year 2000 passes without issue)

Based on:2,109 MOT Tests

Most common failures	No# failures
Headlamp aim out of alignment	94
Front Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	62
Rear Brake lever has inadequate reserve travel \|3.1.3b\|	56
Exhaust is leaking and excessively noisey \|7.1.1b\|	47
Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	45
Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	39
Steering headbearing has excessive free play \|2.2.2\|	32
Rear Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	28
Registration plate issues	28
Horn not working \|1.7.3a\|	21
Rear reflector on motorcycle missing \|1.4.1\|	21
Horn not loud enough to be heard by another road user \|1.7.3a\|	18
Rear position lamp does not illuminate immediately when it is switched on \|1.1.3a\|	18
Headlamp insecure \|1.2.3b\|	16
Rear reflector on motorcycle obscured \|1.4.1\|	16
Rear shock absorber has inadequate damping effect. \|2.4.A.3b\|	16
Nearside Rear Direction indicator not working \|1.5.1c\|	15
Roller brake test The less effective brake control does not achieve an efficiency of 25%. \|3.3.A2b\|	15
Headlamp at least one does not illuminate on main beam \|1.2.2a\|ii\|\|	14
Direction indicators affected by the operation of another lamp \|1.5.1c\|	11
Riders seat insecure \|6.2.1a\|	11
Exhaust excessively deteriorated \|7.1.1a\|	11
Nearside Front Direction indicator not working \|1.5.1c\|	11
Steering movement excessively `notchy` with the wheel raised \|2.2.1b\|	11
Throttle operating incorrectly \|6.2.1f\|	10
Rear Rear reflector on motorcycle missing \|1.4.1\|	9
Nearside Front shock absorber seal failed and leaking oil \|2.3.3\|	9
Front Roller brake test indicates excessive fluctuation of brake effort \|3.3.A1d\|	8
Offside Front Direction indicator not working \|1.5.1c\|	8
Front wheel bearings have excessive free play \|2.3.5b\|	8
Front Exhaust is leaking and excessively noisey \|7.1.1b\|	7
Front Steering headbearing has excessive free play \|2.2.2\|	7
Rear Roller brake test indicates a binding brake \|3.3.A1a\|	7
Front position lamp does not illuminate immediately when switched on \|1.1.3a\|	6
Rear Rear position lamp does not illuminate immediately when it is switched on \|1.1.3a\|	6
Fairings insecure and likely to impede the steering \|2.1.2e\|	6
Direction indicators not working \|1.5.1c\|	6
Registration plate lamp issues	6
Stop lamp affected by the operation of another lamp \|1.3.2\|	6
Offside Rear Direction indicator not working \|1.5.1c\|	6
Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition \|7.1.2\|	5
Front Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	5
Handlebar deformed \|2.1.1b\|	5
Front shock absorber seal failed and leaking oil \|2.3.3\|	5
Steering movement excessively `notchy` with the weight on the lower bearing \|2.2.1a\|	5
Front position lamp adversely affected by the operation of another lamp \|1.1.3b\|	5
Nearside Front Direction indicators not working \|1.5.1c\|	5
Front Brake lever has inadequate reserve travel \|3.1.3b\|	5
Front Roller brake test indicates a binding brake \|3.3.A1a\|	5
Headlamp aim beam image kick up to the offside \|1.6\|	5
Offside Front Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	5
Floor brake test The less effective brake control does not achieve an efficiency of 25%. \|3.3.C1b\|	5
Headlamp aim headlamp deteriorated and function impaired \|1.2.3a\|	5
Wheel alignment incorrect which adversely affects the steering \|2.5.1\|	5
Front Brake lever is so short and the brake cannot be readily applied \|3.1.3c\|	5
Front Fairings insecure and likely to impede the steering \|2.1.2e\|	5
Rear Rear shock absorber has inadequate damping effect. \|2.4.A.3b\|	4
Rear Rear reflector on motorcycle obscured \|1.4.1\|	4
Front position lamp insecure \|1.1.1c\|	4
Throttle has a significant change in engine speed whilst moving the steering from lock to lock \|2.1.4\|	4
Headlamp deteriorated and function impaired \|1.2.3a\|	4
Rear wheel has a loose wheel nut\|s\| \|4.2.3a\|	4
Rear Roller brake test indicates a sticking brake \|3.3.A1a\|	4
Rear wheel bearings have excessive free play \|2.4.A.2c\|	4
Rear position lamp insecure \|1.1.1c\|	3
Direction indicators flashing more than 120 times per minute \|1.5.1c\|	3
Nearside Front Front shock absorber seal failed and leaking oil \|2.3.3\|	3
Nearside Brake lever has inadequate reserve travel \|3.1.3b\|	3
Front Brake disc\|s\| has excessive run out \|3.2.A1m\|	3
Fuel system component leaking \|7.2.1a\|	3
Nearside Rear Brake lever has inadequate reserve travel \|3.1.3b\|	3
Rear Exhaust is leaking and excessively noisey \|7.1.1b\|	3
Nearside Rear Direction indicators not working \|1.5.1c\|	3
Rear position lamp adversely affected by the operation of another lamp \|1.1.3b\|	3
Front Headlamp aim beam image kick up to the offside \|1.6\|	3
Offside Front Direction indicators not working \|1.5.1c\|	3
Offside Rear Direction indicators not working \|1.5.1c\|	3
Headlamp aim beam image kick-up is to the offside \|1.6.1\|	3
Front Headlamp insecure \|1.2.3b\|	3
Front Brake disc\|s\| excessively worn \|3.2.A1l\|	3
Front Front wheel bearings have excessive free play \|2.3.5b\|	3
Nearside Front Direction indicator flashing more than 120 times per minute \|1.5.1c\|	3
Brake lever has inadequate reserve travel \|3.1.3b\|	3
Offside Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	3
Front Direction indicators not working \|1.5.1c\|	3
Rear Direction indicators not working \|1.5.1c\|	3
Front Headlamp main beam affected by the operation of another lamp \|1.2.2c\|	3
Offside Front shock absorber seal failed and leaking oil \|2.3.3\|	3
All position lamps do not illuminate immediately when switched on \|1.1.3a\|	3
Horn control defective \|1.7.2a\|	3
Front Brake disc\|s\| excessively scored \|3.2.A1l\|	3
Roller brake test No brake control achieves an efficiency of 30%. \|3.3.A2a\|	3
Headlamp aim not tested \|1.6\|	3
Headlamp not working on dipped beam (4.1.1 (a) (ii))	3
Front Floor brake test indicates a binding brake \|3.3.C2c\|	2
Exhaust has part of the system missing \|7.1.1a\|	2
Direction indicator flashing more than 120 times per minute \|1.5.1c\|	2
Stop lamp remains on when the brake is released \|1.3.1e\|	2
Horn sounds harsh or grating \|1.7.3c\|	2
Front Leg shield insecure and likely to impede the steering \|2.1.2e\|	2
Horn is not continous or uniform \|1.7.3c\|	2
Front Brake locking device missing \|3.2.A1e\|	2
Nearside Direction indicator flashing more than 120 times per minute \|1.5.1c\|	2
Rear Brake lever insecure \|3.1.2a\|	2
Rear wheel spindle securing nut\|s\| loose \|2.4.A.2b\|	2
Rear shock absorber seal failed and leaking oil \|2.4.A.1c\|	2
Front Brake performance not tested \|3.3\|	2
Floor brake test No brake control achieves an efficiency of 30%. \|3.3.C1a\|	2
Floor brake test Neither brake control achieves an efficiency of 25% \|3.3.C1b\|	2
Centre Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking \|6.1.1c\|	2
Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort \|3.3.A1c\|	2
Steering control fouling between components which interferes with the free movement of the steering \|2.1.2a\|	2
Rear reflector on motorcycle obscured \|1.4.2b\|	2
Offside Direction indicators not working \|1.5.1c\|	2
Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking \|6.1.1c\|	2
Front suspension has inadequate damping effect. \|2.3.6c\|	2
Lower Front position lamp does not illuminate immediately when switched on \|1.1.3a\|	2
Front Stop lamp remains on when the brake is released \|1.3.1e\|	2
Front Steering movement excessively `notchy` with the wheel raised \|2.2.1b\|	2
Nearside Rear Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	2
Exhaust mounting does not fully support the exhaust system \|7.1.1.c\|	2
Motorcycle structure excessively distorted \|6.1.1a\|	2
Front Headlamp dipped beam affected by the operation of another lamp \|1.2.2c\|	2
Rear Shock absorber has negligible damping effect \|5.3.2 \|b\|\|	2
An item not tested \|Manual\|	2
Nearside Rear Direction indicator not working \|4.4.1 \|a\| \|ii\|\|	2
Rear Brake lever mounting insecure \|3.1.2a\|	2
Front wheel bearings are excessively rough \|2.3.5b\|	2
Rear Brake lining\|s\| less than 1.5 mm thick \|3.2.A1f\|i\|\|	2
Nearside Direction indicator affected by the operation of another lamp \|1.5.1c\|	2
Rear wheel rotation likely to be impeded \|6.2.1b\|	2
Front Stop lamp deteriorated and function impaired \|1.3.3a\|	2
Front Stop lamp missing \|1.3.3a\|	2
Direction indicators flashing less than 60 times a minute \|1.5.1c\|	2
Offside Handlebar handgrip not secure to handlebars. \|2.1.1c\|	2
Horn is not a constant note \|1.7.3c\|	2
Rear Brake excessively binding \|1.2.1 \|f\|\|	2
Nearside Direction indicators flashing more than 120 times per minute \|1.5.1c\|	2
Handlebar mounting clamp loose \|2.1.1a\|	2
Brake performance not tested \|3.3\|	2
Front suspension assembly component excessively misaligned \|2.3.1\|	2
Front Stop lamp affected by the operation of another lamp \|1.3.2\|	2
Rear Stop lamp affected by the operation of another lamp \|1.3.2\|	2
Wheel alignment incorrect which adversely affects the handling \|2.5.1\|	2
Steering movement excessively stiff with the weight on the lower bearing \|2.2.1a\|	2
Front Brake disc\|s\| is excessively distorted \|3.2.A1m\|	2
Centre Front Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	2
Indicator tell tale not functioning \|1.5.2\|	2
Nearside Front Brake lever has inadequate reserve travel \|3.1.3b\|	2
Front Stop lamp not working (4.3.1 (a) (ii))	2
All direction indicators adversely affected by the operation of another lamp (4.4.3 (b))	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	94
Front Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	62
Rear Brake lever has inadequate reserve travel \|3.1.3b\|	56
Exhaust is leaking and excessively noisey \|7.1.1b\|	47
Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	45
Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	39
Steering headbearing has excessive free play \|2.2.2\|	32
Rear Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	28
Registration plate issues	28
Horn not working \|1.7.3a\|	21
Rear reflector on motorcycle missing \|1.4.1\|	21
Horn not loud enough to be heard by another road user \|1.7.3a\|	18
Rear position lamp does not illuminate immediately when it is switched on \|1.1.3a\|	18
Headlamp insecure \|1.2.3b\|	16
Rear reflector on motorcycle obscured \|1.4.1\|	16
Rear shock absorber has inadequate damping effect. \|2.4.A.3b\|	16
Nearside Rear Direction indicator not working \|1.5.1c\|	15
Roller brake test The less effective brake control does not achieve an efficiency of 25%. \|3.3.A2b\|	15
Headlamp at least one does not illuminate on main beam \|1.2.2a\|ii\|\|	14
Direction indicators affected by the operation of another lamp \|1.5.1c\|	11
Riders seat insecure \|6.2.1a\|	11
Exhaust excessively deteriorated \|7.1.1a\|	11
Nearside Front Direction indicator not working \|1.5.1c\|	11
Steering movement excessively `notchy` with the wheel raised \|2.2.1b\|	11
Throttle operating incorrectly \|6.2.1f\|	10
Rear Rear reflector on motorcycle missing \|1.4.1\|	9
Nearside Front shock absorber seal failed and leaking oil \|2.3.3\|	9
Front Roller brake test indicates excessive fluctuation of brake effort \|3.3.A1d\|	8
Offside Front Direction indicator not working \|1.5.1c\|	8
Front wheel bearings have excessive free play \|2.3.5b\|	8
Front Exhaust is leaking and excessively noisey \|7.1.1b\|	7
Front Steering headbearing has excessive free play \|2.2.2\|	7
Rear Roller brake test indicates a binding brake \|3.3.A1a\|	7
Front position lamp does not illuminate immediately when switched on \|1.1.3a\|	6
Rear Rear position lamp does not illuminate immediately when it is switched on \|1.1.3a\|	6
Fairings insecure and likely to impede the steering \|2.1.2e\|	6
Direction indicators not working \|1.5.1c\|	6
Registration plate lamp issues	6
Stop lamp affected by the operation of another lamp \|1.3.2\|	6
Offside Rear Direction indicator not working \|1.5.1c\|	6
Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition \|7.1.2\|	5
Front Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	5
Handlebar deformed \|2.1.1b\|	5
Front shock absorber seal failed and leaking oil \|2.3.3\|	5
Steering movement excessively `notchy` with the weight on the lower bearing \|2.2.1a\|	5
Front position lamp adversely affected by the operation of another lamp \|1.1.3b\|	5
Nearside Front Direction indicators not working \|1.5.1c\|	5
Front Brake lever has inadequate reserve travel \|3.1.3b\|	5
Front Roller brake test indicates a binding brake \|3.3.A1a\|	5
Headlamp aim beam image kick up to the offside \|1.6\|	5
Offside Front Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	5
Floor brake test The less effective brake control does not achieve an efficiency of 25%. \|3.3.C1b\|	5
Headlamp aim headlamp deteriorated and function impaired \|1.2.3a\|	5
Wheel alignment incorrect which adversely affects the steering \|2.5.1\|	5
Front Brake lever is so short and the brake cannot be readily applied \|3.1.3c\|	5
Front Fairings insecure and likely to impede the steering \|2.1.2e\|	5
Rear Rear shock absorber has inadequate damping effect. \|2.4.A.3b\|	4
Rear Rear reflector on motorcycle obscured \|1.4.1\|	4
Front position lamp insecure \|1.1.1c\|	4
Throttle has a significant change in engine speed whilst moving the steering from lock to lock \|2.1.4\|	4
Headlamp deteriorated and function impaired \|1.2.3a\|	4
Rear wheel has a loose wheel nut\|s\| \|4.2.3a\|	4
Rear Roller brake test indicates a sticking brake \|3.3.A1a\|	4
Rear wheel bearings have excessive free play \|2.4.A.2c\|	4
Rear position lamp insecure \|1.1.1c\|	3
Direction indicators flashing more than 120 times per minute \|1.5.1c\|	3
Nearside Front Front shock absorber seal failed and leaking oil \|2.3.3\|	3
Nearside Brake lever has inadequate reserve travel \|3.1.3b\|	3
Front Brake disc\|s\| has excessive run out \|3.2.A1m\|	3
Fuel system component leaking \|7.2.1a\|	3
Nearside Rear Brake lever has inadequate reserve travel \|3.1.3b\|	3
Rear Exhaust is leaking and excessively noisey \|7.1.1b\|	3
Nearside Rear Direction indicators not working \|1.5.1c\|	3
Rear position lamp adversely affected by the operation of another lamp \|1.1.3b\|	3
Front Headlamp aim beam image kick up to the offside \|1.6\|	3
Offside Front Direction indicators not working \|1.5.1c\|	3
Offside Rear Direction indicators not working \|1.5.1c\|	3
Headlamp aim beam image kick-up is to the offside \|1.6.1\|	3
Front Headlamp insecure \|1.2.3b\|	3
Front Brake disc\|s\| excessively worn \|3.2.A1l\|	3
Front Front wheel bearings have excessive free play \|2.3.5b\|	3
Nearside Front Direction indicator flashing more than 120 times per minute \|1.5.1c\|	3
Brake lever has inadequate reserve travel \|3.1.3b\|	3
Offside Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	3
Front Direction indicators not working \|1.5.1c\|	3
Rear Direction indicators not working \|1.5.1c\|	3
Front Headlamp main beam affected by the operation of another lamp \|1.2.2c\|	3
Offside Front shock absorber seal failed and leaking oil \|2.3.3\|	3
All position lamps do not illuminate immediately when switched on \|1.1.3a\|	3
Horn control defective \|1.7.2a\|	3
Front Brake disc\|s\| excessively scored \|3.2.A1l\|	3
Roller brake test No brake control achieves an efficiency of 30%. \|3.3.A2a\|	3
Headlamp aim not tested \|1.6\|	3
Headlamp not working on dipped beam (4.1.1 (a) (ii))	3
Front Floor brake test indicates a binding brake \|3.3.C2c\|	2
Exhaust has part of the system missing \|7.1.1a\|	2
Direction indicator flashing more than 120 times per minute \|1.5.1c\|	2
Stop lamp remains on when the brake is released \|1.3.1e\|	2
Horn sounds harsh or grating \|1.7.3c\|	2
Front Leg shield insecure and likely to impede the steering \|2.1.2e\|	2
Horn is not continous or uniform \|1.7.3c\|	2
Front Brake locking device missing \|3.2.A1e\|	2
Nearside Direction indicator flashing more than 120 times per minute \|1.5.1c\|	2
Rear Brake lever insecure \|3.1.2a\|	2
Rear wheel spindle securing nut\|s\| loose \|2.4.A.2b\|	2
Rear shock absorber seal failed and leaking oil \|2.4.A.1c\|	2
Front Brake performance not tested \|3.3\|	2
Floor brake test No brake control achieves an efficiency of 30%. \|3.3.C1a\|	2
Floor brake test Neither brake control achieves an efficiency of 25% \|3.3.C1b\|	2
Centre Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking \|6.1.1c\|	2
Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort \|3.3.A1c\|	2
Steering control fouling between components which interferes with the free movement of the steering \|2.1.2a\|	2
Rear reflector on motorcycle obscured \|1.4.2b\|	2
Offside Direction indicators not working \|1.5.1c\|	2
Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking \|6.1.1c\|	2
Front suspension has inadequate damping effect. \|2.3.6c\|	2
Lower Front position lamp does not illuminate immediately when switched on \|1.1.3a\|	2
Front Stop lamp remains on when the brake is released \|1.3.1e\|	2
Front Steering movement excessively `notchy` with the wheel raised \|2.2.1b\|	2
Nearside Rear Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	2
Exhaust mounting does not fully support the exhaust system \|7.1.1.c\|	2
Motorcycle structure excessively distorted \|6.1.1a\|	2
Front Headlamp dipped beam affected by the operation of another lamp \|1.2.2c\|	2
Rear Shock absorber has negligible damping effect \|5.3.2 \|b\|\|	2
An item not tested \|Manual\|	2
Nearside Rear Direction indicator not working \|4.4.1 \|a\| \|ii\|\|	2
Rear Brake lever mounting insecure \|3.1.2a\|	2
Front wheel bearings are excessively rough \|2.3.5b\|	2
Rear Brake lining\|s\| less than 1.5 mm thick \|3.2.A1f\|i\|\|	2
Nearside Direction indicator affected by the operation of another lamp \|1.5.1c\|	2
Rear wheel rotation likely to be impeded \|6.2.1b\|	2
Front Stop lamp deteriorated and function impaired \|1.3.3a\|	2
Front Stop lamp missing \|1.3.3a\|	2
Direction indicators flashing less than 60 times a minute \|1.5.1c\|	2
Offside Handlebar handgrip not secure to handlebars. \|2.1.1c\|	2
Horn is not a constant note \|1.7.3c\|	2
Rear Brake excessively binding \|1.2.1 \|f\|\|	2
Nearside Direction indicators flashing more than 120 times per minute \|1.5.1c\|	2
Handlebar mounting clamp loose \|2.1.1a\|	2
Brake performance not tested \|3.3\|	2
Front suspension assembly component excessively misaligned \|2.3.1\|	2
Front Stop lamp affected by the operation of another lamp \|1.3.2\|	2
Rear Stop lamp affected by the operation of another lamp \|1.3.2\|	2
Wheel alignment incorrect which adversely affects the handling \|2.5.1\|	2
Steering movement excessively stiff with the weight on the lower bearing \|2.2.1a\|	2
Front Brake disc\|s\| is excessively distorted \|3.2.A1m\|	2
Centre Front Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	2
Indicator tell tale not functioning \|1.5.2\|	2
Nearside Front Brake lever has inadequate reserve travel \|3.1.3b\|	2
Front Stop lamp not working (4.3.1 (a) (ii))	2
All direction indicators adversely affected by the operation of another lamp (4.4.3 (b))	2

MOT History from tests of petrol YAMAHA YN50s year 2000

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