| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 20 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Registration plate issues | 6 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Headlamp insecure |1.2.3b| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Nearside Front Direction indicator insecure |1.5.3b| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Footrest missing |6.2.1a| | 3 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Horn not working |1.7.3a| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Steering lock stop ineffective |2.1.3| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| 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| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| An item not tested |Manual| | 1 |
| Gradient brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.D1b| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Nearside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Upper Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Brake pedal attachment screws loose |3.1.2b| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Stop lamp not working From rear control (4.3.1 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear Suspension arm pin or bush excessively worn Swingarm bearings (5.3.4 (a) (i)) | 1 |
| Rear Upper Shock absorber insecurely attached mounting bolt loose (5.3.2 (a) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Footrest missing Both (6.2.12 (a)) | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Handlebar deformed |2.1.1b| | 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 |
| Centre Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Front Upper Headlamp aim not tested |1.6| | 1 |
| Centre Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Central Front Upper Dipswitch does not operate immediately when selected on dipped beam Low/High beam switch operating in reverse (4.1.3 (b)) | 1 |
| Central Front Upper Dipswitch does not operate immediately when selected on main beam Low/High beam switch operating in reverse (4.1.3 (b)) | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Central Front Lower Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Central Front Lower Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Central Front Upper Horn not working (7.7 (a)) | 1 |
| Stop lamp does not illuminate immediately a brake applies front switch |1.3.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear switch |1.3.1a| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Front position lamp missing |1.1.1a| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Centre Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |