| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 28 |
| Headlamp aim out of alignment | 22 |
| Registration plate issues | 16 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 15 |
| Horn not working |1.7.3a| | 11 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Rear Brake disc|s| cracked |3.2.A1g| | 9 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Drive chain excessively tight |6.2.1d| | 6 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Offside Front Footrest insecure |6.2.1a| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Nearside Footrest insecure |6.2.1a| | 2 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Brake locking device missing |3.2.A1e| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Inner Front Horn not working |1.7.3a| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Offside Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 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 |
| Brake hose excessively deteriorated | 2 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake rod insecure SPLIT PIN MISSING, BRAKE TORQUE ARM |1.1.15 |c|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Drive chain excessively tight, so that it is likely to fail links seized (6.1.7 (k) (ii)) | 1 |
| Front Brake hose excessively twisted both incorrectly fitted ,chafing on retaining mounts (1.1.12 (b) (ii)) | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Horn missing |1.7.1| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute front and rear |1.5.1c| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Fairings insecure and likely to impede the steering fuel tank cover |2.1.2e| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Nearside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Lower Rear suspension bush has excessive free play shock |2.4.A2a|i|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Centre Rear Lower Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Steering headbearing has excessive wear or free play freeplay (2.2.2 (f) (i)) | 1 |
| Offside Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired no paten |1.2.3a| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Rear 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 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Upper Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Registration plate lamp issues | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Centre Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Horn not working horn fails when brake control is applied |1.7.3a| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Offside Front Direction indicator missing |4.4.1 |a| |ii|| | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride castle nut on rear axle split pin missing |6.2.1h| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Brake performance not tested |3.3| | 1 |
| Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake hose which buldges |3.2.B4| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Fuel system component insecure fuel tank insecure |7.2.1b| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake component leaking fluid |3.2.B4| | 1 |
| Throttle operating incorrectly sticking |6.2.1f| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp does not illuminate immediately a brake applies from front brake |1.3.1a| | 1 |
| Centre Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Outer Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Outer Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |