| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 14 |
| Registration plate issues | 6 |
| Registration plate lamp issues | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 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 reflector missing (4.8.2 (a) (ii)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Footrest missing both rear |6.2.12 |a|| | 1 |
| Rear Suspension component likely to fail |5.3.3 |b| |ii|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Suspension arm likely to fail |5.3.3 |b| |ii|| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Spindle R clip missing |6.2.1h| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the steering Forks Twisted (2.4 (a)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| All direction indicators not working Not flashing (4.4.1 (a) (ii)) | 1 |
| Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Footrest missing Both pillion (6.2.12 (a)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Nearside Position lamp switch insecure |4.2.2 |b|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Suspension component modified so the suspension is inoperative linkage seizing. |5.3.3 |c| |ii|| | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Position lamp switch allows the rear position lamp to be switched off when the headlamp(s) are on (4.2.2 (a)) | 1 |
| Position lamp switch does not illuminate all position lamps with a single operation (4.2.2 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| 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| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Shock absorber has negligible damping effect Not returning |5.3.2 |b|| | 1 |
| Nearside Front Footrest insecure locking devise missing |6.2.12 |a|| | 1 |
| Wheel alignment incorrect which adversely affects the steering No gap on nearside |2.4 |a|| | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Shock absorber has negligible damping effect suspension not returning |5.3.2 |b|| | 1 |
| Rear Wheel more than one fixing missing spindle split pin |5.2.1 |a| |ii|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Rear Lower Shock absorber has an excessively worn bush Bottom shocker mount bushes. (5.3.2 (c)) | 1 |
| Front Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Handlebar deformed to the extent that steering is affected bent / kinked weakening integral strength of bars (2.2.1 (c) (ii)) | 1 |
| Front Brake hose damaged and likely to fail rubbing on brake disc (1.1.12 (a)) | 1 |
| Front Stop lamp not working lever (4.3.1 (a) (ii)) | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Central Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Stop lamp not working Brake control 1 (4.3.1 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Stop lamp does not illuminate immediately a brake applies from control 1 |1.3.1a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Suspension component likely to fail Rear suspension seized solid. Suspension inoperative. (5.3.3 (b) (ii)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Direction indicator not working rear left hand (4.4.1 (a) (ii)) | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Front Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Brake excessively binding |1.2.1 |f|| | 1 |
| Drive chain horseshoe locking device likely to become detached split link too big |6.1.7 |j| |ii|| | 1 |
| Rear Brake disc contaminated rear disc contaminated |1.1.14 |b|| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Drive chain so loose it is likely to fail some links very tight and close to seizing (6.1.7 (c) (ii)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |