| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 23 |
| Drive chain excessively loose |6.2.1d| | 14 |
| Rear reflector on motorcycle missing |1.4.1| | 13 |
| Fuel cap sealing washer missing |7.2.2c| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Registration plate issues | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Roller brake test indicates a binding brake (3.3.A1a) | 2 |
| Horn not working |1.7.3a| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear reflector on sidecar missing |1.4.1| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Drive chain excessively loose (6.2.1d) | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Brake locking device missing front pads retaining pin missing r-clip |3.2.A1e| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Footrest missing |6.2.1a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Offside Rear Lower Drive chain excessively loose Chain is to loose (6.1.7 (c) (i)) | 1 |
| Central Front Lower Brake excessively binding Front Brake Binding (1.2.1 (f)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Registration plate lamp issues | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort (3.3.A1c) | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Front Brake lever has inadequate reserve travel (3.1.3b) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Rear wheel bearings have excessive free play Wheel Bearings Have Excessive Play |2.4.A.2c| | 1 |
| Horn not working (1.7.3a) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Steering movement excessively notchy with the wheel raised (2.2.1b) | 1 |
| Front Brake disc significantly and obviously worn excessive movement in rivets |1.1.14 |a| |i|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort (3.3.A1d) | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Rear suspension bush has excessive free play swinging arm bushes where found loose, tightened at test station |2.4.A2a|i|| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Throttle operating incorrectly not returning |6.2.1f| | 1 |
| Nearside Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Shock absorber has a serious fluid leak Both front (5.3.2 (b)) | 1 |