| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 27 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 26 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 24 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 23 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 20 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 20 |
| Steering headbearing has excessive free play |2.2.2| | 17 |
| Horn not working |1.7.3a| | 17 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 16 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 15 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 11 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 9 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 8 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 6 |
| Fuel system component leaking |7.2.1a| | 6 |
| Registration plate issues | 6 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 6 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 5 |
| Riders seat insecure |6.2.1a| | 5 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 5 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Front Front suspension spring worn and seriously weakened |2.3.2b| | 3 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Front suspension assembly component loose |2.3.1| | 2 |
| Brake pedal insecure |3.1.2a| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Front Brake lever insecure |3.1.2a| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Fuel hose leaking |7.2.1a| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear wheel insecure |4.2.3b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front position lamp adversely affected by the operation of the horn |1.1.3b| | 2 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Built up wheel has a loose bolt/s |4.2.1c| | 1 |
| Offside Front Upper Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Fuel cap missing |7.2.2a| | 1 |
| Lower Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Front suspension has a fracture of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Nearside Front Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Front Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Front suspension spring fractured |2.2.1b|I|| | 1 |
| Inner Fuel tank leaking |7.2.1a| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Brake lever excessively chafed |3.2.A1a| | 1 |
| Steering linkage has excessive free play |2.2.2| | 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 |
| Centre Front Lower Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Brake cable badly frayed |3.2.A1b| | 1 |
| Front position lamp does not illuminate immediately when switched on hi beam |1.1.3a| | 1 |
| Rear wheel has a loose wheel bolt|s| |4.2.3a| | 1 |
| An item not tested |Manual| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Headlamp aim not tested |4.1.2 |b|| | 1 |
| Front Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Front Dipswitch does not operate immediately when selected on main beam |4.1.3 |b|| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Front wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Gradient brake test indicates a severely juddering brake |3.3.D1d| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Plate brake test No brake control achieves an efficiency of 30%. |3.3.B2a| | 1 |
| Plate brake test Neither brake control achieves an efficiency of 25% |3.3.B2b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Fuel system component leaking |7.2.1a| | 1 |
| Brake pedal has inadequate reserve travel rear |3.1.3b| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Front Horn is not a constant note |1.7.3c| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Upper All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Offside Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Upper Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Brake performance not tested |3.3| | 1 |
| Offside Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Upper Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Wheel more than one fixing missing |5.2.1 |a| |ii|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort needed adjusting up |3.3.A1c| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Front Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |