| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 36 |
| Registration plate issues | 20 |
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| 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| | 8 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 7 |
| Horn not working |1.7.3a| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 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 Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front 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 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure axle nut locking devse missing |6.1.1 |b| |i|| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected Severe notch in steering headbearing |2.2.2 |f| |ii|| | 1 |
| Brake back plate insecure Slit pin missing rear brake arm |1.1.14 |d|| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear 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 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Stop lamp insecure |1.3.3b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock on right lock |2.1.4| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Offside Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Riders seat missing |6.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Brake hose leaking |3.6.A.1| | 1 |
| Nearside Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Offside Stop lamp emits other than a steady red light |1.2.1e| | 1 |
| Nearside Rear Brake back plate|s| securing device loose |3.5.1j| | 1 |
| Offside Rear Brake back plate|s| securing device loose |3.5.1j| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 1 |
| Nearside Stop lamp not working |1.2.1b| | 1 |
| Offside Direction indicator not working |1.4.A.2c| | 1 |
| Rear reflector missing |1.5.1a| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar vehicle fitted with a standard silencer in average condition |7.1.4| | 1 |
| Service brake: efficiency below requirements |3.7.B.7| | 1 |
| Offside Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Valve stem seriously misaligned |5.2.3 |j|| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake locking device insecure rear brake arm pinch bolt |3.2.A1e| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Steering headbearing has excessive free play |9.2.4| | 1 |
| Rear Stop lamp not working |1.2.1b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Sidecar front position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Brake lever cannot be applied smoothly (3.1.3d) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| All direction indicators not working indicators not flashing (4.4.1 (a) (ii)) | 1 |
| Rear Wheel fixing missing (single fixing) (5.2.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake disc contaminated Shock absorber oil on disc and pads (1.1.14 (b)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| All position lamps not working front and rear (4.2.1 (a)) | 1 |
| Registration plate lamp issues | 1 |
| Front Brake disc significantly and obviously worn excessive warp in front brake disc (1.1.14 (a) (i)) | 1 |
| Clutch lever bent so it cannot be readily operated clutch lever has broken at pivot point (6.2.7 (b)) | 1 |
| Nearside Handlebar mounting insecure locking device missing from handle bar riser mounting (2.2.1 (a) (i)) | 1 |
| Offside Handlebar mounting insecure locking device missing from handle bar riser mounting (2.2.1 (a) (i)) | 1 |
| All direction indicators not working all (4.4.1 (a) (ii)) | 1 |
| Stop lamp(s) all not working rear (4.3.1 (a) (iii)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |