| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 26 |
| Registration plate issues | 20 |
| 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| | 6 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Exhaust excessively deteriorated |7.1.1a| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Footrest insecure |6.2.1a| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Front shock absorber seal failed and leaking oil both |2.3.3| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Centre Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Horn not working |1.7.3a| | 1 |
| Front Headlamp switch insecure |1.2.4| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Upper Front suspension assembly component loose |2.3.1| | 1 |
| Rear Rear position lamp insecure |1.1.1c| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| All position lamps not working all lamps |1.1.A.3b| | 1 |
| Front Headlamp not working on dipped beam |1.7.5a| | 1 |
| Headlamp not working on main beam |1.7.5a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Nearside Rear suspension component loose SWINGING ARM NUTS |2.4.A.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Plate brake test indicates a severely grabbing brake |3.3.B1b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Centre Front Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Front Lower Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Nearside Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Offside Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Central Front Lower Brake indicates excessive fluctuation of brake effort Front brake reading fluctuating excessively |1.2.1 |e|| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Lower Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Front Lower Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Handlebar handgrip missing |2.1.1c| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Floor brake test indicates a severely juddering brake |3.3C2d.| | 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 |
| Rear Stop lamp obscured |1.3.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Front Brake component modification adversely affecting braking performance (1.1.21 (d) (ii)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Front Lower Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel spoke missing (5.2.2 (d)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |