| Most common failures | No# failures |
|---|
| Steering headbearing has excessive free play |2.2.2| | 23 |
| Headlamp aim out of alignment | 17 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 10 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Front Steering headbearing has excessive free play |2.2.2| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Fuel cap sealing washer missing |7.2.2c| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Registration plate issues | 5 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Exhaust excessively deteriorated |7.1.1a| | 4 |
| Rear reflector on motorcycle obscured |1.4.1| | 4 |
| Headlamp insecure |1.2.3b| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Horn not working |1.7.3a| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Brake hose damaged | 2 |
| Front Headlamp insecure |1.2.3b| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Brake lever mounting insecure |3.1.2a| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear Rear position lamp insecure |1.1.1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Fuel system component leaking |7.2.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play upper and lower (2.2.2 (f) (i)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Gradient brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.D1b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Centre Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear Brake lever pivots excessively worn |3.1.3a| | 1 |
| Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |