| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Offside Front Footrest insecure |6.2.1a| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Registration plate issues | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Footrest insecure |6.2.1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Front brake switch (4.3.2 (a) (iii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Footrest insecure L/H retaining pin missing (6.2.12 (a)) | 1 |
| Front Brake disc significantly and obviously worn warped (1.1.14 (a) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Shock absorber has a serious fluid leak right side fork seal leaking |5.3.2 |b|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Upper Handlebar deformed |2.1.1b| | 1 |
| Offside Front Upper Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies front brake switch inop switch replaced |1.3.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Throttle operating incorrectly throttle sticks open |6.2.1f| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |