| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 33 |
| Registration plate issues | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 7 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Horn not working |1.7.3a| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Direction indicator 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 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Offside Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain split link not pressed on |6.2.1h| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Front Wheel spoke cracked. |4.2.1b| | 1 |
| Offside Rear Rear wheel spindle securing nut locking device missing No split pin |2.4.A.2b| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Wheel spoke excessively bent |4.2.1b| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Centre Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Front Upper Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Offside Front Headlamp insecure |1.2.3b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Rear Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake hose which buldges |3.2.B4| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Front Position lamp not working side light (4.2.1 (a)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Offside Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Wheel more than one fixing missing COTTER PIN MISSING FROM CASTELATED NUT (5.2.1 (a) (ii)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |