| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 8 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies not working on rear brake application |1.3.1a| | 1 |
| Front Stop lamp remains on when the brake is released brake application |1.3.1e| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Registration plate lamp issues | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Direction indicator deteriorated and function impaired all |1.5.3a| | 1 |
| Nearside Footrest insecure driver |6.2.1a| | 1 |
| Brake lever has inadequate reserve travel fouling on control switches |3.1.3b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Brake hose excessively deteriorated | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Registration plate issues | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Centre Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear foot pedal |1.3.1a| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Rear Decelerometer brake test indicates a sticking brake |3.3.E1d| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Forks excessively deformed |2.2.2 |d| |i|| | 1 |
| Handlebar deformed to the extent that steering is affected left and right handlebars at different angles |2.2.1 |c| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Drive chain excessively loose |6.2.1d| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars left turn |2.1.2b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |