| Most common failures | No# failures |
|---|
| Registration plate issues | 22 |
| Headlamp aim out of alignment | 18 |
| Rear reflector on motorcycle missing |1.4.1| | 15 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Horn not working |1.7.3a| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear 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 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Registration plate lamp issues | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates a binding 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 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Nearside Rear Upper Direction indicator not working |1.5.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Rear position lamp missing |1.1.1a| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Sharp fairing bolts fitted. |6.2.1h| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Front shock absorber seal failed and leaking oil both |2.3.3| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Offside Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts Front flexible pipes on master cylinder foul instrument cluster on full left lock |3.2.B2c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Direction indicator obscured |1.5.1a| | 1 |
| Offside Front Direction indicator obscured |1.5.1a| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Offside 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 Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Wheel fixing missing (single fixing) nearside wheel spacer missing (5.2.1 (a) (ii)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (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 (1.1.14 (b)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |