| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 22 |
| Headlamp aim out of alignment | 20 |
| Registration plate issues | 17 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 9 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Horn not working |1.7.3a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Direction indicator missing |1.5.1a| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Rear suspension component seized |2.4A2a|ii|| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| An item not tested |Manual| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Handlebar cracked |2.1.1b| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Outer Rear Lower Rear wheel insecure |4.2.3b| | 1 |
| Outer Front Lower Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Wheel fractured significantly reducing the original strength |4.2.1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Fuel tank leaking (6.1.3 (b) (i)) | 1 |
| Front Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Direction indicator likely to become detached BOTH FRONT FLASHERS BROKEN OFF THEIR STALKS (4.4.1 (c) (ii)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected BRAKE PEDAL SPRING MISSING (1.1.2 (b) (ii)) | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Wheel damaged or distorted to the extent that control of the motorcycle is likely to be adversely affected |5.2.2 |c| |ii|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Front Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| Stop lamp not working hand operated control |4.3.1 |a| |ii|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Brake performance not tested |1.2.1 |g|| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Horn is not continous or uniform |1.7.3c| | 1 |
| Front Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls stop lamp not working on both brakes (4.3.2 (a) (iii)) | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Wheel excessively corroded wheel corroded where spoke end connects to wheel (5.2.2 (c) (i)) | 1 |
| Rear Wheel spoke excessively loose where wheel is damaged (5.2.2 (d)) | 1 |
| Nearside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |