| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 8 |
| Registration plate issues | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Service brake: efficiency below requirements |3.7.B.7| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Brake lever attachment screws loose |3.1.2b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Parking brake lever has no reserve travel |3.1.6b| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake hose bulging under pressure |1.1.12 |d|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Rear Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Headlamp not in good working order adversely affecting beam image |1.2.4a| | 1 |
| Front Brake hose stretched |3.6.B.4c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Direction indicators not working All |1.5.1c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 1 |
| Rear brake binding | 1 |
| Rear Stop lamp not working both |1.2.1b| | 1 |
| Nearside Front Stop lamp not working |1.2.1b| | 1 |
| Service brake: efficiency below requirements |3.7.C.1a| | 1 |
| Offside Rear Suspension arm has excessive play in a pin/bearing |2.4.G.2| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Upper Brake master cylinder has a seized master cylinder pivot. |3.2.B5| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Offside Stop lamp not working |1.2.1b| | 1 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Horn not working |1.7.3a| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Fuel system component leaking petrol tap not shutting off causing fuel to overflow from carburettors |7.2.1a| | 1 |
| Front Brake caliper insecure |1.1.16 |c| |i|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Wheel fixing missing |single fixing| Split pin missing front wheel spindle |5.2.1 |a| |ii|| | 1 |
| Direction indicators not working Indicator intermittent fault on steering lock to lock |PRS| |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |