| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 35 |
| Drive chain excessively loose |6.2.1d| | 22 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 16 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Rear reflector on motorcycle obscured |1.4.1| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Registration plate issues | 6 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Riders seat insecure |6.2.1a| | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Stop lamp remains on when the brakes are released | 2 |
| Offside Direction indicator not working |1.5.1c| | 2 |
| 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| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Registration plate lamp issues | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Fuel hose leaking |7.2.1a| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Brake master cylinder severely damaged |3.2.B1b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake fluid reservoir severely damaged |3.2.B1b| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Rear Exhaust mounting missing |7.1.1c| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front An item not tested |Manual| | 1 |
| Rear Rear wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Front Headlamp lens missing |4.1.1 |b| |ii|| | 1 |
| Offside Brake lever excessively worn |1.1.15 |b|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear An item not tested |Manual| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Front position lamp missing |1.1.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Upper Throttle operating incorrectly |6.2.1f| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake pedal anti-slip provision worn smooth |1.1.2 |c|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride clutch lever nut missing |6.2.1h| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| An item not tested |Manual| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Drive chain excessively tight |6.2.1d| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Front wheel bearings are excessively rough Rough Bearing with Movement! |2.3.5b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Centre Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Stop lamp remains on when the brake is released rear brake pedal operation |1.3.1e| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Direction indicators not working when engine running at normal speed |1.5.1c| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Horn not working |1.7.3a| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Stop lamp not working not working when front brake is applied |4.3.1 |a| |ii|| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Offside Front Upper Front suspension assembly component cracked |2.3.1| | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Offside Front Footrest missing (6.2.12 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| All direction indicators not working indicartors repaired (4.4.1 (a) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Brake drum in such a condition that it is seriously weakened (1.1.14 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |