| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 38 |
| Registration plate issues | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Horn not working |1.7.3a| | 5 |
| Nearside Rear Direction indicator not working |1.5.1c| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Sidecar front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Sidecar wheel bearings are excessively rough |5.2.3d| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Front Sidecar attachment has abnormal play |5.1.A.1| | 1 |
| Offside Rear Sidecar attachment has abnormal play |5.1.A.1| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Service brake efficiency less than 50% of the required value (1.2.2 (a) (ii)) | 1 |
| Rear Stop lamp|s| remains on when the brakes are released |4.3.2 |a| |iii|| | 1 |
| Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake hose excessively deteriorated | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Brake performance not tested Unable to test as rear axle loose and insecure. (1.2.1 (g)) | 1 |
| Rear Wheel spindle loose Rear axle loose. (5.2.1 (c) (i)) | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 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 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 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 |
| Offside Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Front Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Sidecar wheel bearings have excessive free play |5.2.3c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Sidecar wheel bearings have excessive free play |5.2.3c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Wheel spoke excessively bent |4.2.1b| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front 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 |
| Brake hose damaged | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Offside Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Nearside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |