| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Rear Direction indicator not working |1.5.1c| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| 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| | 2 |
| Registration plate issues | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Offside Rear Upper Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Rear Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake lever pivots excessively worn |3.1.3a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Offside Rear Lower Exhaust has part of the system missing |7.1.1a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Nearside Rear Direction indicator obscured |1.5.1a| | 1 |
| Offside Rear Direction indicator obscured |1.5.1a| | 1 |
| Front Brake cable has a significantly damaged outer casing. |3.2.A1b| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Suspension arm mounting modified so the suspension is inoperative NO MOVEMENT IN REAR SUSPENSION (5.3.3 (c) (ii)) | 1 |
| Stop lamp not working FROM REAR BRAKE PEDAL (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp light intensity significantly reduced FROM FRONT BRAKE LEVER (4.3.3 (a) (ii)) | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Nearside Rear Direction indicator lens defective such that the emitted light is adversely affected lense insecure (4.4.1 (b) (ii)) | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Stop lamp not working rear brake |4.3.1 |a| |ii|| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |