| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Registration plate issues | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Horn not working |1.7.3a| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Front wheel spindle securing nut locking device missing lock nut missing from clutch lever,fitted PRS |2.3.3a| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Nearside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Fuel system component leaking n/s carb |7.2.1a| | 1 |
| All position lamps adversely affected by the operation of another lamp brake light |1.1.3b| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Offside Front Lower Brake locking device insecure rear brake torque arm bolt ,nut not done up |3.2.A1e| | 1 |
| Central Rear Lower Rear reflector on motorcycle missing reflector missing |1.4.1| | 1 |
| Rear reflector likely to become detached |4.8.1 |b| |ii|| | 1 |
| Rear Wheel fixing missing |single fixing| |5.2.1 |a| |ii|| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies from control 2 footbrake |1.3.1a| | 1 |
| Front Brake disc significantly and obviously worn FRONT BRAKE DISCS WARPED |1.1.14 |a| |i|| | 1 |
| Drive chain horseshoe locking device likely to become detached SPLIT LINK FITTED AND VERY WORN |6.1.7 |j| |ii|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Rear Wheel fixing loose |single fixing| rear wheel axel bolt loose |5.2.1 |a| |ii|| | 1 |
| Brake performance not tested no front brake |1.2.1 |g|| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Fuel hose leaking excessively or a risk of fire on shut off tap |6.1.3 |b| |ii|| | 1 |
| Fuel system component leaking excessively or a risk of fire fuel tap union |6.1.3 |b| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Offside Front Brake disc contaminated covered in grease/oil |1.1.14 |b|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Chain guard insecure |6.1.7 |i|| | 1 |
| Nearside Front Lower Brake excessively binding |1.2.1 |f|| | 1 |
| Offside Front Lower Brake excessively binding |1.2.1 |f|| | 1 |
| Offside Rear Lower Brake excessively binding |1.2.1 |f|| | 1 |
| Fuel tank leaking (6.1.3 (b) (i)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Riders seat insecure seat does not fasten. |6.2.1a| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up SPROCKET BEARING (5.1.3 (a) (ii)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Front Brake clevis joint insecure (1.1.15 (c)) | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Brake component insecure rear brake torque arm split pin missing (1.1.21 (c)) | 1 |
| Rear Wheel spindle loose split pin missing (5.2.1 (c) (i)) | 1 |
| Rear Footrest missing both rear missing (6.2.12 (a)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Fuel cap ineffective o ring missing (6.1.3 (b) (i)) | 1 |
| Front Position lamp missing (4.2.1 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Headlamp missing (4.1.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Footrest missing dual seat fitted (6.2.12 (a)) | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Rear Brake pedal has insufficient reserve travel Brake pedal spongy. Air in system (1.1.2 (a)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Direction indicator adversely affected by the operation of another lamp ALL (4.4.3 (b)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Wheel spindle locking device missing (5.2.1 (d)) | 1 |