| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 34 |
| Registration plate issues | 18 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 8 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Brake pedal insecure |3.1.2a| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 2 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Inner Front Upper Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Throttle operating incorrectly sticking open |6.2.1f| | 1 |
| Nearside Front Front suspension assembly component loose |2.3.1| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Front Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Lower Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Headlamp aim not tested wired incorectly |4.1.2 |b|| | 1 |
| Wheel alignment incorrect which adversely affects the handling engine mount bent? |2.4 |a|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Offside Front suspension assembly component cracked |2.3.1| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Gradient brake test indicates a binding brake front and rear |3.3.D1c| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Rear Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear wheel has a loose wheel bolt|s| |4.2.3a| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| All position lamps do not illuminate immediately when switched on front and rear |1.1.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear control |1.3.1a| | 1 |
| Rear Stop lamp showing white light to the rear (4.3.3 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |