| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 16 |
| Registration plate issues | 7 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Brake hose excessively deteriorated | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Fuel system component leaking |7.2.1a| | 2 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Front Brake component has an inadequate repair |3.1.5| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Wheel fixing missing (multiple fixings) no split pin in front wheel spindle (5.2.1 (a) (i)) | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Stop lamp does not illuminate immediately a brake applies control one |front brake| |1.3.1a| | 1 |
| All direction indicators not working replace flasher unit (4.4.1 (a) (ii)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 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 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear suspension has a modification which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake pedal has inadequate reserve travel (3.1.3b) | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Upper Front suspension assembly component loose |2.3.1| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Rear Lower Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Fuel system component leaking Fuel tap |7.2.1a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Drive belt guard insecure |6.2.1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |