| Most common failures | No# failures |
|---|
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp aim out of alignment | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Registration plate issues | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Headlamp switch insecure |1.2.4| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Horn is not continous or uniform |1.7.3c| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Indicator switch insecure |1.5.4| | 1 |
| Offside Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Lower Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Nearside Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Rear Position lamp light intensity significantly reduced |4.2.3 |a| |ii|| | 1 |
| Headlamp aim not tested light output reduced |4.1.2 |b|| | 1 |
| Registration plate lamp issues | 1 |
| Headlamp at least one does not illuminate on dipped beam Headlight goes off at tickover |1.2.2a|i|| | 1 |
| Offside Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Plate brake test indicates a severely juddering brake |3.3.B1b| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Horn not working |1.7.3a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Front suspension assembly component cracked |2.3.1| | 1 |
| Offside Front suspension assembly component cracked |2.3.1| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Shock absorber has an excessively worn bush both forks (5.3.2 (c)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |