| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Registration plate issues | 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| | 3 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Brake hose excessively deteriorated | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake pipe excessively corroded | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Nearside Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Upper Direction indicator insecure |1.5.3b| | 1 |
| Front Upper Riders seat insecure |6.2.1a| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Lower Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Position lamp missing (4.2.1 (a) (ii)) | 1 |
| Offside Front Position lamp missing (4.2.1 (a) (ii)) | 1 |
| Nearside Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Horn not working |1.7.3a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Front Headlamp aim beam image too far to the left |1.6.4| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Horn missing |1.7.1| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Steering headbearing has excessive wear or free play Adjust Head Bearings |2.2.2 |f| |i|| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Upper Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Front Upper Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Front Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |