| Most common failures | No# failures |
|---|
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Headlamp aim out of alignment | 21 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 16 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 16 |
| Steering headbearing has excessive free play |2.2.2| | 15 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 13 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 13 |
| Horn not working |1.7.3a| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Front Steering headbearing has excessive free play |2.2.2| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 8 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 7 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| 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| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 4 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 4 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Registration plate issues | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 4 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 2 |
| Rear Gradient brake test indicates a sticking brake |3.3.D1c| | 2 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 2 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Front wheel insecure |4.2.3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Brake pedal insecure |3.1.2a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Brake lever pivots excessively worn |3.1.3a| | 1 |
| Rear Brake drum|s| insecure |3.2.A1g| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Front Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Headlamp aim beam image kick up to the offside TAPED
|1.6| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Horn missing |1.7.1| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Lower Brake cable insecure Front brake cable lower securing nut insecure |1.1.15 |c|| | 1 |
| Rear Brake pedal insecure Rear brake pedal insecure, securing clip missing |1.1.2 |e| |i|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected Headstock bearings stiff, lock to lock |2.2.2 |f| |ii|| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Offside Front Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Front Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Registration plate lamp issues | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Fuel pipe leaking |7.2.1a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Front Steering linkage has excessive free play |2.2.2| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Lower Rear shock absorber insecurely mounted locking device |2.4.A.3b| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Handlebar mounting clamp loose bars insecure |2.1.1a| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Nearside Front Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Offside Front Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Rear Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Decelerometer brake test indicates a severely juddering brake |3.3.E1e| | 1 |
| Centre Rear Rear position lamp missing |1.1.1a| | 1 |
| Rear Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Offside Handlebar fractured to the extent that detachment is likely |2.2.1 |c| |ii|| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on dip beam not working |1.1.3a| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Rear Lower Brake linkage excessively damaged |3.2.A1c| | 1 |
| Centre Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Gradient brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.D1b| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |