| Most common failures | No# failures |
|---|
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 24 |
| Headlamp aim out of alignment | 22 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 17 |
| Horn not working |1.7.3a| | 16 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 15 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 14 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 13 |
| Steering headbearing has excessive free play |2.2.2| | 13 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 11 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 11 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 9 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 8 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 8 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 7 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 3 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 3 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| 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| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Stop lamp affected by the operation of the horn |1.3.2| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 3 |
| Registration plate issues | 3 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Centre Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Brake back plate|s| insecure |3.2.A1j| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front suspension assembly component loose |2.3.1| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Headlamp incorrect colour |1.2.1| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Centre Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Lower Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Central Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Central Rear Riders seat insecure |6.2.1a| | 1 |
| Centre Rear Riders seat missing release clip adjusted |6.2.1a| | 1 |
| Footrest insecure N/S REAR LOOSE |6.2.1a| | 1 |
| Nearside Front Front wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Offside Rear Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort low effort |3.3.A1c| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Inner Rear Lower Brake linkage excessively corroded |3.2.A1c| | 1 |
| Inner Front Upper Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Decelerometer brake test indicates a sticking brake |3.3.E1d| | 1 |
| Front Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Offside Front Upper Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Headlamp not working on main beam fit new bulb |4.1.1 |a| |ii|| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Front Upper Steering control fouling between components which interferes with the free movement of the steering shock absorber bolt fouling mudguard |2.1.2a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Brake hose damaged | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Front Upper Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear Lower Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Fuel hose leaking float sticking |7.2.1a| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Front suspension has severe distortion of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Headlamp at least one does not illuminate on dipped beam fuse |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam fuse |1.2.2a|ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies fuse |1.3.1a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Motorcycle structure cracked Enginemount to frame weld cracked |6.1.1a| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Upper Handlebar mounting clamp loose |2.1.1a| | 1 |
| Upper Brake performance not tested |3.3| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Offside Lower Front suspension assembly component loose |2.3.1| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Central Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Plate brake test No brake control achieves an efficiency of 30%. |3.3.B2a| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Upper Front suspension assembly component loose |2.3.1| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Centre Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Offside Rear 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| | 1 |
| Offside Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Outer Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front suspension assembly component loose |2.3.1| | 1 |
| Offside Front suspension assembly component loose |2.3.1| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Brake caliper|s| insecure front brake caliper mounting bracket |3.2.A1j| | 1 |
| Rear brake binding | 1 |
| Rear Brake drum|s| cracked |3.2.A1g| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Leg shield so located that it is likely to impede the steering |2.1.2e| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp incorrect colour |4.1.4 |a|| | 1 |
| Throttle operating incorrectly sticks |6.2.1f| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake pedal pivot excessively worn |1.1.1 |b|| | 1 |
| Rear Brake pedal pivot has excessive free play |1.1.1 |b|| | 1 |
| Central Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |