| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Registration plate issues | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| 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| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 2 |
| Rear Brake hose excessively damaged (1.1.12 (b) (ii)) | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Indicator switch defective |1.5.4| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Front Brake lever is inoperative |3.1.3c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front Brake locking device missing |3.2.A1e| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Upper Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 1 |
| Offside Upper Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Lower Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 1 |
| Offside Front Upper Suspension arm has excessive play in a pin/bearing |2.4.G.2| | 1 |
| Centre Rear brake caliper securing device missing |3.5.1j| | 1 |
| Rear Drive shaft uj which forms part of the suspension has a loose flange bolt |2.4.G.4c| | 1 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 1 |
| Rear parking brake recording little or no effort | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Registration plate lamp issues | 1 |
| Nearside Front Direction indicators missing |1.4.A.2b| | 1 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Rear suspension component seized |2.4A2a|ii|| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Motorcycle structure cracked |6.1.1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake drum|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Offside Headlamp aim beam image kick up to the offside |1.8| | 1 |
| Nearside Indicator tell tale inoperative |1.4.A.2a| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 1 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 1 |
| Nearside Front Upper Suspension arm has excessive play in a pin/bush |2.4.G.2| | 1 |
| Nearside Rear Suspension arm attachment bracket/mounting insecure |2.4.G.1| | 1 |
| All position lamps not working |1.1.A.3b| | 1 |
| Offside Headlamp insecure |1.7.3| | 1 |
| Nearside Rear Wheel insecure |4.2.A.1c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 1 |
| Nearside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 1 |
| Nearside Headlamp aim not tested |1.8.A.1c| | 1 |
| Offside Rear Wheel hub spigot mounting excessively worn |4.2.B.5| | 1 |
| Lower Steering column universal joint insecure |2.1.5| | 1 |
| Service brake is causing the vehicle to swerve to the offside |3.7.C.2| | 1 |
| Front Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.C.1a| | 1 |
| Front brake application uneven | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Front Lower Front suspension locking device missing |2.5.A.4| | 1 |
| Offside Front Lower Front suspension locking device missing |2.5.A.4| | 1 |
| Nearside Stop lamp not working |1.2.1b| | 1 |
| Offside Stop lamp not working |1.2.1b| | 1 |
| Rear Brake component inadequately mounted brake hose not secured/routed incorrectly (1.1.21 (c)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Front Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Brake performance not tested rear brake hose burst during test (1.2.1 (g)) | 1 |
| Rear Brake hose leaking (1.1.12 (c)) | 1 |
| Clutch lever positioned so it cannot be readily operated retaining bolt not held in (nut missing) (6.2.7 (b)) | 1 |