| Most common failures | No# failures |
|---|
| Steering headbearing has excessive free play |2.2.2| | 28 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 12 |
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Headlamp aim out of alignment | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 9 |
| Front wheel bearings are excessively rough |2.3.5b| | 8 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Brake hose damaged | 5 |
| Indicator tell tale not functioning |1.5.2| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Registration plate issues | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Fuel cap sealing washer missing |7.2.2c| | 3 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Horn is not continous or uniform |1.7.3c| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 2 |
| Rear Rear position lamp insecure |1.1.1c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Centre 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 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Lower Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Centre Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Centre Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Centre Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Lower Direction indicator not working |1.5.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Brake fluid contaminated (1.8 (a)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Motorcycle structure excessively damaged fender bolt missing |6.1.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Nearside Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Brake hose excessively deteriorated | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |