| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 31 |
| Registration plate issues | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Registration plate lamp issues | 14 |
| Rear reflector missing (4.8.2 (a) (ii)) | 12 |
| Rear Brake excessively binding (1.2.1 (f)) | 5 |
| Horn not working |1.7.3a| | 5 |
| Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| 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| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Brake performance not tested (1.2.1 (g)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| 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 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 2 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Nearside Front position lamp incorrect colour |1.1.2a| | 2 |
| Offside Front position lamp incorrect colour |1.1.2a| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Rear Brake pedal pivot excessively tight (1.1.1 (a)) | 1 |
| Brake pedal is bent and the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Brake pedal anti-slip provision missing bent out of position |1.1.2 |c|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Sidestand insecure |6.2.1h| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Direction indicator adversely affected by the operation of another lamp rear indicators intergrated into rear stop & tail lamp (4.4.3 (b)) | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Brake performance not tested Due to brake bind (1.2.1 (g)) | 1 |
| Stop lamp not working front lever not operating stop light (4.3.1 (a) (ii)) | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies front control |1.3.1a| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Offside Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain excessively loose lube and spray |6.2.1d| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Stop lamp switch with a delay in operation front brake light switch faulty |4.3.2 |a| |ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies When front brake lever is applied |1.3.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Centre Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear All direction indicators obviously incorrectly positioned Rear indicators not 180mm apart/combined rear light unit. |4.4.3 |a|| | 1 |
| Nearside Footrest missing (6.2.12 (a)) | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Headlamp light intensity severely reduced both (4.1.4 (a)) | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Rear Upper Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Nearside Front Upper Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Direction indicator obviously incorrectly positioned both (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Drive chain so worn it is likely to fail seized link |6.1.7 |c| |ii|| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Stop lamp not working disconnected, (4.3.1 (a) (ii)) | 1 |