| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 59 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 31 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 27 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 26 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 24 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 23 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 23 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 23 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 17 |
| Steering headbearing has excessive free play |2.2.2| | 17 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Rear Direction indicator incorrect colour |1.5.1b| | 11 |
| Offside Rear Direction indicators not working |1.5.1c| | 11 |
| Nearside Rear Direction indicators not working |1.5.1c| | 11 |
| Direction indicator incorrect colour |1.5.1b| | 11 |
| Riders seat insecure |6.2.1a| | 11 |
| Horn not working |1.7.3a| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Registration plate issues | 11 |
| Front wheel bearings are excessively rough |2.3.5b| | 10 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 9 |
| Front Direction indicator incorrect colour |1.5.1b| | 9 |
| Throttle operating incorrectly |6.2.1f| | 8 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 8 |
| Offside Rear Direction indicator not working |1.5.1c| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Headlamp insecure |1.2.3b| | 7 |
| Nearside Rear Direction indicator not working |1.5.1c| | 6 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 3 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Front Front mudguard insecure |2.3.7| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Nearside Direction indicator incorrect colour |1.5.1b| | 3 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 2 |
| All direction indicators incorrect colour (4.4.3 (a)) | 2 |
| Rear Rear position lamp incorrect colour |1.1.2b| | 2 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Direction indicator incorrect colour All |1.5.1b| | 2 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Nearside Front Upper Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Front Upper Direction indicator incorrect colour |1.5.1b| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Handlebar retaining device loose (2.2.1 (b) (i)) | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Offside Direction indicator incorrect colour |1.5.1b| | 2 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Brake lever insecure |3.1.2a| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear position lamp incorrect colour |1.1.2b| | 2 |
| Indicator switch defective |1.5.4| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Direction indicator incorrect colour all |1.5.1b| | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |