| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 19 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 14 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 13 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 13 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 13 |
| Headlamp aim out of alignment | 12 |
| Registration plate issues | 12 |
| Steering headbearing has excessive free play |2.2.2| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 6 |
| Horn not working |1.7.3a| | 5 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Handlebar mounting clamp loose |2.1.1a| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Riders seat insecure |6.2.1a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 3 |
| Front Brake back plate|s| insecure |3.2.A1j| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 2 |
| Brake pedal insecure |3.1.2a| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Front position lamp insecure |1.1.1c| | 2 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Lower Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Front wheel insecure |4.2.3b| | 2 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Rear Brake locking device insecure |3.2.A1e| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Front Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Position lamp adversely affected by the operation of another lamp |4.2.3 |b|| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Brake cable has a significantly damaged outer casing. |3.2.A1b| | 1 |
| Front Steering linkage has excessive free play |2.2.2| | 1 |
| Offside Front Lower Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Throttle operating incorrectly throttle not returning to closed position |6.2.1f| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Centre Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Offside Front suspension assembly component loose |2.3.1| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| 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| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front wheel has a loose wheel bolt|s| |4.2.3a| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front position lamp does not illuminate immediately when switched on dip and main |1.1.3a| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Rear Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Centre Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Offside Front Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride steering fork linkage |6.2.1h| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Rear Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Nearside Front Front suspension assembly component cracked |2.3.1| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake cable excessively corroded |3.2.A1b| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| An item not tested |Manual| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Brake pedal attachment screws loose |3.1.2b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Outer Front Horn not working |1.7.3a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Front Wheel fixing missing |single fixing| Wheel nut missing |5.2.1 |a| |ii|| | 1 |