| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 73 |
| Drive chain excessively loose |6.2.1d| | 19 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Horn not working |1.7.3a| | 11 |
| Drive chain worn to excess |6.2.1e| | 11 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 10 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 9 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 8 |
| Registration plate issues | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Handlebar deformed |2.1.1b| | 4 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Registration plate lamp issues | 3 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| An item not tested |Manual| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Fuel hose leaking |7.2.1a| | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |