| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Headlamp aim out of alignment | 2 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Exhaust has part of the system missing Spring |7.1.1a| | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Direction indicator lens defective such that the emitted light is adversely affected |4.4.1 |b| |ii|| | 1 |
| Front Brake lever excessively worn |1.1.15 |b|| | 1 |
| Rear Brake lever excessively worn broken |1.1.15 |b|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Drive chain excessively loose |Fully Adjusted| |6.2.1d| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Offside Rear Brake component modification adversely affecting braking performance (1.1.21 (d) (ii)) | 1 |
| Front Brake lever cracked |3.1.2c| | 1 |
| Front Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Rear Footrest insecure footrest pivot not moving |6.2.1a| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake pedal is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Registration plate issues | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Horn not working |1.7.3a| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Riders seat insecure catch not working |6.2.1a| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Registration plate lamp issues | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride split link fitted incorrectly |6.2.1h| | 1 |