| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Registration plate issues | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Horn not working |1.7.3a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Headlamp insecure |1.2.3b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Horn missing |1.7.1| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Brake lever insecure pivot bolt and nut |3.1.2a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Throttle operating incorrectly Throttle sticking on |6.2.1f| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts rear wheel |3.2.B2c| | 1 |
| Sidecar front position lamp missing |1.1.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Brake locking device missing both ends of brake tie arm |3.2.A1e| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Throttle operating incorrectly Sticking On R/H Lock |6.2.1f| | 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 |
| Seat insecure |6.2.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Direction indicator missing All indicators |1.5.1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s switch missing |1.2.2b|ii|| | 1 |
| Nearside Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake hose leaking |1.1.12 |c|| | 1 |
| Front Upper Brake disc contaminated |1.1.14 |b|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Centre Fuel system component leaking carbs |7.2.1a| | 1 |
| Nearside Footrest insecure |6.2.12 |a|| | 1 |
| Offside Footrest insecure |6.2.12 |a|| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride split pin missing.
torque are loose |6.2.1h| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Front suspension has an inadequate repair of a load bearing member or its supporting structure. bottom yoke pinch bolts missing |2.3.8| | 1 |
| Fuel system component leaking fuel tap leaking |7.2.1a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear suspension bush has excessive free play swing arm bushes have excess play |2.4.A2a|i|| | 1 |
| Rear suspension has an inadequate repair of a load bearing member or its supporting structure. both rear shock bolts loose |2.4.A.2d| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Offside Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Front Brake caliper insecure |1.1.16 |c| |i|| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Rear Lower Engine mounting/bracket bracket missing (6.1.8 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Nearside Front Brake excessively binding front brake sticking on (1.2.1 (f)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Direction indicator obviously incorrectly positioned Both rear (4.4.3 (a)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Brake performance not tested (1.2.1 (g)) | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Offside Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |