| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 38 |
| Front wheel bearings have excessive free play |2.3.5b| | 20 |
| Front wheel bearings are excessively rough |2.3.5b| | 15 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 14 |
| Steering headbearing has excessive free play |2.2.2| | 13 |
| Headlamp aim beam image kick up to the offside |1.6| | 12 |
| Horn not working |1.7.3a| | 11 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Registration plate issues | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Drive chain worn to excess |6.2.1e| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Nearside Rear Direction indicator not working |1.5.1c| | 7 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 7 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Offside Front Footrest insecure |6.2.1a| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Fuel system component insecure |7.2.1b| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Indicator switch insecure |1.5.4| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Nearside Steering lock stop ineffective |2.1.3| | 3 |
| Centre Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Rear Footrest missing |6.2.1a| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Front mudguard insecure |2.3.7| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Fork yoke deformed |2.1.1b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 2 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Brake hose damaged | 2 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear suspension component loose |2.4.A.1a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Fuel pipe leaking |7.2.1a| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Offside Drive chain fouling another component |6.2.1d| | 2 |
| Brake pedal pivots excessively worn |3.1.3a| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front mudguard can easily contact the wheel |2.3.7| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Footrest missing |6.2.1a| | 1 |
| An item not tested |Manual| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Headlamp light intensity severely reduced |dip| |4.1.4 |a|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Brake caliper operating mechanism has excessive travel |1.1.16 |e| |i|| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride petrol tank insecure. |6.2.1h| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Nearside Front Lower Front suspension assembly component missing |2.3.1| | 1 |
| Offside Front Lower Front suspension assembly component missing |2.3.1| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Nearside Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Front Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Upper Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Offside Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Rear Brake pedal cracked |3.1.2c| | 1 |
| Offside Rear Upper Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Front Front position lamp does not face the front |1.1.1d| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Upper Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Drive chain worn to excess |6.2.1e| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Front suspension assembly component missing |2.3.1| | 1 |
| Offside Front suspension assembly component missing |2.3.1| | 1 |
| Nearside Rear Brake locking device missing |3.2.A1e| | 1 |
| Centre Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Upper Fuel system component leaking |7.2.1a| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Horn is not a constant note |1.7.3c| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Offside Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake lever |1.3.1a| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Upper Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Upper Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Upper Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Lower Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Inner Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Front An item not tested |Manual| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Upper Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Offside Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Offside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake hose leaking (1.1.12 (c)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected sticking (6.2.7 (a) (ii)) | 1 |
| Throttle operating incorrectly loose (6.2.7 (a) (i)) | 1 |