| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Horn not working |1.7.3a| | 12 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 11 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 8 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Riders seat insecure |6.2.1a| | 5 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Direction indicators not working all |1.5.1c| | 2 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear wheel insecure |4.2.3b| | 2 |
| Motorcycle structure excessively corroded |6.1.1a| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Brake hose bulging under pressure |3.6.B.3| | 1 |
| Exhaust emissions carbon monoxide content excessive |7.3.B.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Wheel fixing loose (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Offside Rear Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Exhaust system insecure Broken & missing fastners. (6.1.2 (a)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Shock absorber has negligible damping effect rear shocks seized |5.3.2 |b|| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 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 suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Registration plate issues | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Stop lamp does not illuminate immediately a brake applies from both brakes |1.3.1a| | 1 |
| Direction indicators not working all 4 |1.5.1c| | 1 |
| Exhaust mounting does not fully support the exhaust system bolts missing |7.1.1.c| | 1 |
| Rear position lamp insecure mounted to rear guard which is hanging down onto rear wheel. |1.1.1c| | 1 |
| Rear wheel rotation likely to be impeded due to insecure rear guard. |6.2.1b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Lower Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear suspension component excessively bent |2.4.A.1a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Centre Rear Lower Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Rear Brake cable knotted |3.2.A1b| | 1 |
| Front Front mudguard can easily contact any fixed point of the motor bicycle. |2.3.7| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Direction indicators affected by the operation of another lamp all |1.5.1c| | 1 |
| Floor brake test indicates a sticking brake front |3.3.C2c| | 1 |
| Floor brake test indicates a binding brake front |3.3.C2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies front and rear |1.3.1a| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Sidecar front position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Motorcycle structure excessively damaged Front fairing. |6.1.1a| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake component leaking fluid brake caliper |3.2.B4| | 1 |