| Most common failures | No# failures |
|---|
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 20 |
| Headlamp aim out of alignment | 18 |
| Steering headbearing has excessive free play |2.2.2| | 17 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 14 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Direction indicators not working |1.5.1c| | 7 |
| Horn not working |1.7.3a| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Nearside Front Direction indicator not working |1.5.1c| | 6 |
| Riders seat insecure |6.2.1a| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear reflector on motorcycle obscured |1.4.1| | 5 |
| Registration plate issues | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Fuel cap sealing washer missing |7.2.2c| | 3 |
| 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| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Front suspension assembly component excessively corroded. |2.3.1| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Brake pipe excessively corroded | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Lower Steering damper ineffective |2.1.2d| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Centre Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Nearside Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Centre Front Lower Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Horn is not a constant note |1.7.3c| | 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 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Centre Steering lock stop loose |2.1.3| | 1 |
| Nearside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Inner Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Inner Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Upper Horn not working |1.7.3a| | 1 |
| Nearside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Centre Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Brake component is fractured |3.1.5| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear Brake cable insecure | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Rear suspension component cracked |2.4.A.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. front forks seized,not moveing |2.3.6b| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Brake disc|s| excessively pitted excessive rust and pitting |3.2.A1l| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear wheel rotation likely to be impeded Air box loose |6.2.1b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Nearside Front suspension assembly component cracked |2.3.1| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Inner Rear Direction indicator not working |1.5.1c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Brake hose excessively damaged |1.1.12 |b| |ii|| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Centre Front Lower Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Centre Rear Lower Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Brake lever cracked |3.1.2c| | 1 |
| Rear Brake component worn and seriously reduced in strength rear brake cable Streacht |3.2.A1| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Direction indicator insecure |1.5.3b| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Brake hose damaged | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Fuel pipe leaking |7.2.1a| | 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 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Front Lower Brake pipe union leaking fluid |3.2.B4| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |