| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 20 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Registration plate issues | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Indicator tell tale not operating correctly |1.5.2| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Rear Stop lamp switch with a delay in operation adjusted (4.3.2 (a) (ii)) | 1 |
| Rear Drive chain sprocket excessively loose TIGHTENED NUTS. (6.1.7 (c) (i)) | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Footrest missing both pillion |6.2.12 |a|| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Suspension component pin or bush excessively worn swing arm pivot (5.3.4 (a) (i)) | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Brake master cylinder severely corroded |3.2.B1b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear Footrest missing (6.2.1a) | 1 |
| Brake reaction bracket securing bolt(s) loose (3.2.A1j) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. (2.1.1c) | 1 |
| Offside Handlebar handgrip not secure to handlebars. (2.1.1c) | 1 |
| Front Brake lever has inadequate reserve travel (3.1.3b) | 1 |
| Front Hydraulic brake control feels spongy (3.1.4a) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Rear Drive chain sprocket worn to excess (6.2.1e) | 1 |
| Rear Brake locking device missing (3.2.A1e) | 1 |
| Brake locking device missing (3.2.A1e) | 1 |
| Locking device(s) not correctly fitted which may make the motor bicycle dangerous to ride (6.2.1h) | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front suspension assembly component missing |2.3.1| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride brake reaction arm nut loose and no split pin |6.2.1h| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Front Horn is not continous or uniform |1.7.3c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| An item not tested |Manual| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Nearside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Rear Roller brake test indicates excessive fluctuation of brake effort (3.3.A1d) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Lower Steering linkage has excessive free play |2.2.2| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Upper Brake locking device missing |3.2.A1e| | 1 |
| Front Handlebar so insecure it is likely to become detached yoke centre bolt loose |2.2.1 |b| |ii|| | 1 |
| Rear Footrest missing both |6.2.12 |a|| | 1 |
| Central Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |