| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 29 |
| Registration plate issues | 14 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Horn not working |1.7.3a| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Stop lamp missing |1.3.3a| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Offside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Brake hose excessively deteriorated | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Rear suspension bush has excessive free play shock absorber lower front-most mounting bush |2.4.A2a|i|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Nearside Front Brake component has an inadequate repair |3.1.5| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 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 |
| Offside Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Brake pipe excessively damaged |3.2.B2a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Brake pipe inadequately supported broken hose support. Rescured |3.2.B2b| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Brake disc|s| cracked |3.2.A1g| | 1 |
| Centre All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Nearside Front Steering lock stop missing |2.1.3| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Stop lamp not working Brake control 1 (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Front Stop lamp not working handlebar lever (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Decelerometer brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Suspension arm insecurely attached (5.3.3 (a) (i)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |