| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 14 |
| Rear reflector on motorcycle missing |1.4.1| | 13 |
| Registration plate issues | 7 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Handlebar handgrip not secure to handlebars. L/H |2.1.1c| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear Direction indicator light intensity significantly reduced (4.4.3 (a)) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Lower Footrest insecure |6.2.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Throttle operating incorrectly staying open |6.2.1f| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Drive belt guard insecure part of hugger broken and not secure |6.2.1c| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear All direction indicators incorrect colour (4.4.3 (a)) | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Throttle operating incorrectly Throttle sticking on right hand lock (6.2.7 (a) (i)) | 1 |
| Offside Rear Direction indicator not working (1.5.1c) | 1 |
| Horn not working (1.7.3a) | 1 |
| Offside Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Nearside Rear Direction indicators not working (1.5.1c) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Drive chain excessively loose (6.2.1d) | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |