| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Riders seat insecure |6.2.1a| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Horn not working |1.7.3a| | 4 |
| Registration plate issues | 4 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front suspension assembly component loose |2.3.1| | 2 |
| Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake drum|s| insecure |3.2.A1g| | 1 |
| Brake drum|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Front Headlamp aim not tested |1.6| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front position lamp|s| incorrect colour |1.1.A.3e| | 1 |
| Nearside Rear Stop lamp not working |1.2.1b| | 1 |
| Offside Rear Stop lamp not working |1.2.1b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake reaction bracket insecure |3.2.A1j| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Gradient brake test No brake control achieves an efficiency of 30%. |3.3.D1a| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Registration plate lamp issues | 1 |
| Position lamp lens seriously defective rear lens insecure (4.2.1 (b)) | 1 |