| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 24 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 11 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 11 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Registration plate issues | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Horn not working |1.7.3a| | 4 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Stop lamp affected by the operation of the horn |1.3.2| | 2 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Rear wheel has a loose wheel stud|s| |4.2.3a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Upper Riders seat insecure |6.2.1a| | 1 |
| Centre Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Brake cylinder severely corroded |3.2.B1b| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Front Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Shock absorber insecurely attached |5.3.2 |a| |i|| | 1 |
| Rear Wheel fixing loose |multiple fixings| |5.2.1 |a| |i|| | 1 |
| Front Position lamp switch does not illuminate all position lamps with a single operation |4.2.2 |a|| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front Fuel hose leaking |7.2.1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Central Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Centre Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Rear Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Front Brake drum|s| insecure |3.2.A1g| | 1 |
| Brake hose excessively deteriorated | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Offside Front Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake cable insecure |1.1.15 |c|| | 1 |
| Rear Fuel hose leaking |7.2.1a| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Exhaust mounting missing (7.1.1c) | 1 |
| Front Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Rear reflector likely to become detached (4.8.1 (b) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |