| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 29 |
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Headlamp aim out of alignment | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 8 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Horn not working |1.7.3a| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear position lamp incorrect colour |1.1.2b| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Rear reflector on motorcycle obscured |1.4.1| | 3 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front Direction indicator not working |1.5.1c| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Registration plate issues | 3 |
| Fuel cap sealing washer missing |7.2.2c| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Direction indicators not working |1.5.1c| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Nearside Brake lever pivots excessively worn |3.1.3a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Direction indicators not working all |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies both |1.3.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Vehicle identification number not legible |6.3.5a| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Brake lever cracked |3.1.2c| | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front suspension has excessive stiffness in the suspension movement. forks not damping |2.3.6b| | 1 |
| Front Direction indicators not working front l/h side not working |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing reflector missing |1.4.1| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake lever mounting cracked |3.1.2c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Upper Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Offside Front Brake component has an inadequate repair |3.1.5| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Throttle operating incorrectly sticking on |6.2.1f| | 1 |
| Rear Stop lamp showing white light to the rear |4.3.3 |a| |ii|| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Central Rear Lower Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| All direction indicators not working fault with ignition switch - intermittant operation when tested (4.4.1 (a) (ii)) | 1 |
| All position lamps not working intermittant operation when tested (4.2.1 (a)) | 1 |
| Stop lamp not working intermittant operation when tested (4.3.1 (a) (ii)) | 1 |