| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 29 |
| Headlamp aim out of alignment | 19 |
| Registration plate issues | 11 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 9 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear Footrest missing |6.2.1a| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Rear 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 |
| Horn not working |1.7.3a| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| 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 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front position lamp missing |1.1.1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Lower Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Fuel tank leaking tank insecure |7.2.1a| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Front Upper Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Footrest missing nearside & offside rear (6.2.12 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Direction indicator obscured |1.5.1a| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Offside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Centre Front Front shock absorber seal failed and leaking oil |2.3.3| | 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 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Centre Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear 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| | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Motorcycle structure joining/attachment plate or fastening insecure near side brackets not boulted (6.1.1 (b) (i)) | 1 |
| Front Brake cable insecure (1.1.15 (c)) | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Plate brake test indicates a severely grabbing brake |3.3.B1b| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Brake pedal cracked |3.1.2c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Rear Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Brake component has an inadequate repair |3.1.5| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Offside Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Brake component is excessively corroded |3.1.5| | 1 |