| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 25 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Registration plate issues | 7 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Brake component inadequately mounted Rear brake torque arm locking pin missing. |1.1.21 |c|| | 1 |
| Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Front Position lamp missing (4.2.1 (a)) | 1 |
| Nearside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Offside Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Footrest insecure (6.2.12 (a)) | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Offside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Central Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Central Lower Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front position lamp incorrect colour Pilot lamp bulb is yellow |1.1.2a| | 1 |
| Front position lamp adversely affected by the operation of another lamp Illuminates when the brake light illuminates |1.1.3b| | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Stop lamp affected by the operation of another lamp Cannot clearly distinguish brake lamp from pilot lamp |1.3.2| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Rear Brake hose excessively kinked |3.2.B3a| | 1 |
| Rear Position lamp adversely affected by the operation of another lamp |4.2.3 |b|| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Front Lower Brake hose excessively kinked |3.2.B3a| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected sticking on r/h lock. (6.2.7 (a) (ii)) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Centre Rear Drive chain excessively loose |6.2.1d| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Drive chain sprocket excessively loose All sprocket securing nuts loose. |6.1.7 |c| |i|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 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 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |