| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 16 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 16 |
| Horn not working |1.7.3a| | 16 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 11 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 10 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 6 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Brake pedal is inoperative |3.1.3c| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Stop lamp damaged and function impaired |1.3.3a| | 2 |
| Fuel hose leaking |7.2.1a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Nearside Front Front suspension assembly component loose |2.3.1| | 1 |
| Offside Front Front suspension assembly component loose |2.3.1| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Position lamp not working low/high not working |4.2.1 |a|| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Centre Front Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake cable has a significantly damaged outer casing. |3.2.A1b| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Stop lamp obscured |1.3.1c| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Offside Handlebar handgrip missing |2.1.1c| | 1 |
| Rear Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| An item not tested |Manual| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Inner Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Inner Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Front Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Offside Front Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Registration plate issues | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Brake cable has a significantly damaged outer casing. |3.2.A1b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Fuel system component leaking |7.2.1a| | 1 |
| Rear Rear wheel has a loose wheel stud|s| |4.2.3a| | 1 |
| Rear Brake cable has a significantly damaged outer casing. |3.2.A1b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Centre Rear Upper Stop lamp affected by the operation of another lamp Stop/Tail bulb wired incorrectly |1.3.2| | 1 |
| Centre Rear Upper Rear position lamp adversely affected by the operation of another lamp Stop/Tail bulb wired incorrectly |1.1.3b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front All position lamps not working No high beam (4.2.1 (a)) | 1 |
| Front All position lamps not working No dip beam (4.2.1 (a)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |