| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 28 |
| Drive chain excessively loose |6.2.1d| | 13 |
| Drive chain worn to excess |6.2.1e| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 9 |
| Registration plate issues | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Rear Drive chain excessively loose |6.2.1d| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Horn not working |1.7.3a| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Rear Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Registration plate lamp issues | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp aim projected beam image obviously incorrect Dips wrong way (4.1.2 (c)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Clutch lever positioned so it cannot be readily operated. loose |6.2.1g| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Offside Handlebar excessively deformed |2.2.1 |c| |i|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Suspension arm pin or bush excessively worn swinging arm |5.3.4 |a| |i|| | 1 |
| Footrest missing both rear (6.2.12 (a)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride O/S REAR FOOTREST PIN SPLIT PIN MISSING |6.2.1h| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride REAR BRAKE PLATE STAT SPLIT PIN MISSING |6.2.1h| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Offside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Suspension arm attachment bracket/mounting corroded and seriously weakened (5.3.3 (b) (i)) | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam Both beams on at once (4.1.3 (b)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam Main & dip beam both coming on at once (4.1.3 (b)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen Main / Dip reversed (4.1.2 (a)) | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Nearside Front Brake component has restricted free movement and operation is likely to be impeded calliper bracket siezed |3.2.A1h| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Wheel spoke missing |4.2.1b| | 1 |
| Motorcycle structure excessively corroded this motorcycle should not be ridden due to swing arm corrosion |6.1.1a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear suspension component excessively corroded. swing arm |2.4.A.1a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Rear Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced (6.1.1 (c) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Brake drum|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Headlamp not working on main beam Dip and main beam crossed (4.1.1 (a) (ii)) | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Offside Front Lower Front suspension assembly component loose |2.3.1| | 1 |