| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 33 |
| Rear reflector on motorcycle missing |1.4.1| | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Drive chain worn to excess |6.2.1e| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Registration plate issues | 7 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Headlamp insecure |1.2.3b| | 5 |
| Horn not working |1.7.3a| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 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| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Exhaust mounting missing |7.1.1c| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front suspension assembly component excessively misaligned |2.3.1| | 2 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Wheel has an excessively eccentric bead rim. rear |4.2.2| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Headlamp missing |1.2.3a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain spring link |6.2.1h| | 1 |
| Rear Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Stop lamp not working not working with foot pedal. |4.3.1 |a| |ii|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear An item not tested |Manual| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Offside Handlebar handgrip missing |2.1.1c| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Outer Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Centre Rear Lower Rear mono-shock pivot excessively worn shock link |2.4.B.4| | 1 |
| Rear Wheel fractured significantly reducing the original strength |4.2.1a| | 1 |
| Brake hose damaged | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Position lamp likely to become detached loose bolts (4.2.1 (c) (ii)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Suspension rod ball joint excessively worn (5.3.4 (a) (i)) | 1 |