| Most common failures | No# failures |
|---|
| Registration plate issues | 77 |
| Headlamp aim out of alignment | 75 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 28 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 25 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 20 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 20 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 19 |
| 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| | 16 |
| Registration plate lamp issues | 16 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Horn not working |1.7.3a| | 11 |
| Headlamp aim beam image kick up to the offside |1.6| | 10 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 8 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Nearside Front Direction indicators not working |1.5.1c| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 5 |
| Offside Front Direction indicator not working |1.5.1c| | 5 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 5 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 3 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Rear 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| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Offside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Brake pedal is inoperative |3.1.3c| | 2 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. (3.3.A2b) | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |