| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Direction indicators not working |1.5.1c| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake pedal pivot excessively tight Doesn???t return (1.1.1 (a)) | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| 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 |
| Stop lamp does not illuminate immediately a brake applies Off either brake |1.3.1a| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Registration plate issues | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Front Brake lever so insecure that the brake cannot be readily applied (1.1.2 (e) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |