| Most common failures | No# failures |
|---|
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Headlamp aim out of alignment | 3 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Registration plate issues | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Drive chain fouling another component Front sprocket loose. |6.2.1d| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Motorcycle structure cracked |6.1.1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Motorcycle structure cracked |6.1.1a| | 1 |
| Horn not working |1.7.3a| | 1 |
| Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |