| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 34 |
| Headlamp aim beam image kick up to the offside |1.6| | 12 |
| Horn not working |1.7.3a| | 12 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 11 |
| Steering headbearing has excessive free play |2.2.2| | 10 |
| Registration plate issues | 10 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Rear Direction indicators not working |1.5.1c| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 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 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front wheel spindle loose |2.3.5a| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Nearside Direction indicator not working |1.5.1c| | 2 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Offside Fuel system component leaking |7.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Brake component leaking fluid |3.2.B4| | 1 |
| Front Upper Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Lower Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Horn is not a constant note |1.7.3c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Direction indicator obscured |1.5.1a| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen kick to right |4.1.2 |a|| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Nearside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Brake hose excessively deteriorated | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Direction indicator flashing more than 120 times per minute all |1.5.1c| | 1 |
| Rear All position lamps not working |4.2.1 |a|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Brake lining|s| contaminated |1.1.13 |b|| | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Brake hose leaking fluid |3.2.B4| | 1 |
| Rear An item not tested |Manual| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake hose excessively twisted |3.2.B3a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. (2.1.1c) | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Brake hose fouling |3.2.B3b| | 1 |
| Offside Front Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Nearside Front Front suspension has inadequate damping effect. (2.3.6c) | 1 |
| Offside Front Front suspension has inadequate damping effect. (2.3.6c) | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Brake hose damaged | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Fuel system component leaking |7.2.1a| | 1 |
| Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Nearside Front Lower Front suspension spring worn and seriously weakened |2.3.2b| | 1 |
| Offside Front Lower Front suspension spring worn and seriously weakened |2.3.2b| | 1 |
| Offside Front Lower Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Centre Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Lower Footrest insecure |6.2.1a| | 1 |
| Offside Rear Lower Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. (3.3.A2b) | 1 |
| Rear Brake disc(s) friction surface contaminated by oil or grease (3.2.A1k) | 1 |
| Nearside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |