| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 30 |
| Registration plate lamp issues | 21 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 13 |
| Drive chain excessively loose |6.2.1d| | 13 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Handlebar deformed |2.1.1b| | 8 |
| Registration plate issues | 7 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Front mudguard insecure |2.3.7| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Exhaust system insecure |6.1.2 |a|| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected notchy |2.2.2 |f| |ii|| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Horn missing |1.7.1| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Motorcycle structure cracked |6.1.1a| | 1 |
| Front Brake component is excessively corroded caliper carrier seized |3.1.5| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Front Brake cylinder severely corroded |3.2.B1b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Footrest insecure (6.2.12 (a)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Brake reaction bracket securing bolt|s| missing split pins missing |3.2.A1j| | 1 |
| Front Suspension component attachment bracket/mounting likely to fail L-plate fouling suspension movement |5.3.3 |b| |ii|| | 1 |
| Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear Suspension rod damaged and seriously weakened (5.3.3 (b) (i)) | 1 |
| Fuel system component insecure Fuel tank not fitted correctly |7.2.1b| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Handlebar excessively deformed |2.2.1 |c| |i|| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Drive chain sprocket so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Stop lamp not working from front brake (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Brake clevis joint insecure drum lever |1.1.15 |c|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Horn not working |1.7.3a| | 1 |
| Rear Lower Motorcycle structure excessively corroded swing arm cross member |6.1.1a| | 1 |
| Position lamp not working |4.2.1 |a|| | 1 |
| Central Lower Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced |6.1.1 |c| |i|| | 1 |