| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 26 |
| Registration plate issues | 11 |
| Nearside Rear Direction indicator not working |1.5.1c| | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Nearside Rear Direction indicators not working |1.5.1c| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Fuel hose leaking |7.2.1a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Direction indicator not working Both (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Lower Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp indicators |1.1.3b| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Headlamp insecure Aim lock not working, light moves inside unit (4.1.1 (c)) | 1 |
| Handlebar mounting insecure Handlebars Loose |2.2.1 |a| |i|| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Fuel hose leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Upper All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Wheel spoke excessively bent (5.2.2 (d)) | 1 |
| Wheel has bolts/rivets missing or loose to the extent that control of the motorcycle is likely to be adversely affected (5.2.2 (e) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 1 |
| Offside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure clutch lever locking nut missing (6.1.1 (b) (i)) | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Front Brake pivot excessively worn |1.1.15 |b|| | 1 |
| Wheel alignment incorrect which adversely affects the handling rear wheel on backwards (2.4 (a)) | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Rear wheel has a loose wheel stud|s| |4.2.3a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Rear Direction indicators not working RH REAR INDICATOR NOT WORKING |1.5.1c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake |1.3.1a| | 1 |
| Rear suspension bush excessively deteriorated damper lower |2.4.A2a|i|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |