| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 23 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Horn not working |1.7.3a| | 10 |
| Registration plate issues | 6 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Brake hose excessively deteriorated | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Brake locking device missing |3.2.A1e| | 2 |
| Centre Front Headlamp insecure |1.2.3b| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear position lamp incorrect colour rear brake light omits orange light |1.1.2b| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Direction indicators affected by the operation of another lamp both staying on. (1.5.1c) | 1 |
| Horn missing |1.7.1| | 1 |
| Offside Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Central Rear Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Offside Rear Brake cylinder insecurely mounted LOCKING NUT ON THE SLAVE CYLINDER LOOSE |3.2.B1a| | 1 |
| Centre Lower Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Offside Front Upper Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Nearside Front Upper Steering lock stop ineffective |2.1.3| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Offside Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake linkage excessively damaged |3.2.A1c| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Nearside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Nearside Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |