| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Front Brake lever insecure |3.1.2a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Registration plate issues | 5 |
| Horn not working |1.7.3a| | 4 |
| Fuel cap sealing washer missing |7.2.2c| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Front Brake lever mounting insecure |3.1.2a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Headlamp switch faulty |1.2.4| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Offside Brake lever insecure |3.1.2a| | 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 |
| Offside Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Outer Front Lower Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Nearside Brake lever cracked |3.1.2c| | 1 |
| Nearside Brake lever mounting insecure |3.1.2a| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Brake lever pivots excessively worn |3.1.3a| | 1 |
| Nearside Brake lever insecure |3.1.2a| | 1 |
| Front Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Shock absorber has negligible damping effect Not functioning, no movement |5.3.2 |b|| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Centre Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Front Brake lever insecure |3.1.2a| | 1 |
| Nearside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Brake lever mounting insecure |3.1.2a| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Rear Steering linkage has excessive free play |2.2.2| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Lower Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake cable excessively corroded |3.2.A1b| | 1 |
| Offside Front Brake lever insecure |3.1.2a| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Brake lever excessively damaged |3.2.A1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Front Shock absorber has negligible damping effect new forks fitted (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has negligible damping effect New forks fitted (5.3.2 (b)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |