| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Registration plate lamp issues | 5 |
| Registration plate issues | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam No headlamps illuminated on dip beam |1.2.2a|i|| | 1 |
| Offside Front Throttle operating incorrectly Throttle tube is rotating and moving the bar end weight at the same time resulting in a slow returning throttle |6.2.1f| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Drive chain excessively tight has tight spots (6.1.7 (k) (i)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Rear Brake pedal so insecure that the brake cannot be readily applied (1.1.2 (e) (ii)) | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Offside Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Rear Lower Suspension rod ball joint excessively worn dog bone (5.3.4 (a) (i)) | 1 |
| Stop lamp not working with front brake control (4.3.1 (a) (ii)) | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake disc significantly and obviously worn excessive run out 3mm plus (1.1.14 (a) (i)) | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Lower Suspension arm pin or bush excessively worn linkage bush (5.3.4 (a) (i)) | 1 |
| Drive chain excessively tight tight spots |6.2.1d| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear suspension bearing has excessive free play swingarm linkage |2.4.A2a|i|| | 1 |
| Central Rear Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Lower Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected |1.1.16 |c| |ii|| | 1 |
| Rear Brake performance not tested insecure |1.2.1 |g|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |