| Most common failures | No# failures |
|---|
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Registration plate issues | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp aim out of alignment | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |