| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Horn not working |1.7.3a| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 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 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Motorcycle structure adversely modified |6.1.1b| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Brake component is excessively corroded |3.1.5| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Centre Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Offside Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Centre Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Throttle operating incorrectly cable routed wrong |6.2.7 |a| |i|| | 1 |
| Brake hose excessively deteriorated | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Centre Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 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 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Offside Front Front suspension assembly component missing |2.3.1| | 1 |
| Front Upper Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 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 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Brake excessively binding rear brake (1.2.1 (f)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Registration plate issues | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Nearside Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |