| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Registration plate issues | 6 |
| Horn not working |1.7.3a| | 5 |
| Direction indicators not working |1.5.1c| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Horn is not continous or uniform |1.7.3c| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 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 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Brake pipe excessively corroded | 1 |
| Front Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Front Front suspension assembly component missing |2.3.1| | 1 |
| Fuel system component leaking tap area |7.2.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering front brake lever |2.1.2a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock fouling on steering damper (2.1.4 (b)) | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Brake component inadequately mounted front brake master cylinder reservoir not mounted correctly (1.1.21 (c)) | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock wiring around front suspension forks fouling/making steering tight (2.1.4 (a)) | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Horn missing |1.7.1| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake pipe excessively damaged |3.2.B2a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |