| Most common failures | No# failures |
|---|
| Steering headbearing has excessive free play |2.2.2| | 41 |
| Headlamp aim out of alignment | 15 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Front Steering headbearing has excessive free play |2.2.2| | 11 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Registration plate issues | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear reflector on motorcycle obscured |1.4.1| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Indicator tell tale not functioning |1.5.2| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Fuel cap sealing washer missing |7.2.2c| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Brake hose damaged | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Brake lever insecure |3.1.2a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Brake component is severely distorted |3.1.5| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Lower Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Brake lever is inoperative |3.1.3c| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies brake is applied |1.3.1a| | 1 |
| Front Upper Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Upper Headlamp insecure |1.2.3b| | 1 |
| Offside Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Horn is not continous or uniform |1.7.3c| | 1 |
| Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Front Front position lamp obscured more than 50% |1.1.1d| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Nearside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake component is excessively corroded |3.1.5| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Rear Chain guard insecure |6.2.1c| | 1 |
| Centre Rear Riders seat insecure |6.2.1a| | 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 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front 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 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |