| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 16 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Horn not working |1.7.3a| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Offside Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Fuel hose leaking |7.2.1a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Fuel tank leaking |7.2.1a| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Registration plate issues | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Centre Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Centre Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Offside Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Valve stem seriously damaged valve perished split |5.2.3 |j|| | 1 |
| Front Steering headbearing excessively stiff or notchy head bearings excessively notchy |2.2.2 |f| |i|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Brake hose which buldges |3.2.B4| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Inner Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Steering operation restricted in free movement from lock to lock mirrors fouling windshield |2.1.4 |c|| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| An item not tested |Manual| | 1 |
| 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)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Offside Rear Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake |1.3.1a| | 1 |
| Fuel system component insecure fuel tank |7.2.1b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Centre Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Nearside Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Drive chain sprocket worn to excess Front & Rear
|6.2.1e| | 1 |
| Front Rear wheel rotation likely to be impeded |6.2.1b| | 1 |