| Most common failures | No# failures |
|---|
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Headlamp aim out of alignment | 7 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 6 |
| Horn not working |1.7.3a| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 5 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Registration plate issues | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 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 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Front suspension assembly component loose |2.3.1| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear position lamp damaged and function impaired |1.1.1b| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Centre Rear Upper Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Brake cable badly frayed |3.2.A1b| | 1 |
| Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Rear Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Centre Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Outer Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Riders seat missing |6.2.1a| | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake pedal attachment screws missing. circlip |3.1.2b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| An item not tested |Manual| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Fuel tank leaking (6.1.3 (b) (i)) | 1 |
| Rear Brake component is fractured |3.1.5| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Centre Exhaust mounting missing |7.1.1c| | 1 |
| Front Steering lock stop maladjusted |2.1.3| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Centre Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Lower Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort adjusted |3.3.A1c| | 1 |
| Centre Front Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Offside Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Centre Brake locking device insecure |3.2.A1e| | 1 |