| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 34 |
| Drive chain excessively loose |6.2.1d| | 19 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 13 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Drive chain worn to excess |6.2.1e| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Horn not working |1.7.3a| | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Registration plate issues | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Headlamp insecure |1.2.3b| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Front position lamp incorrect colour |1.1.2a| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Brake hose damaged | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Centre Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Rear Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 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 Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake pipe excessively chafed |3.2.B2a| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Stop lamp not working brake control 1 (4.3.1 (a) (ii)) | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Centre Rear Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front wheel bearings are excessively tight |2.3.5b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Rear Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Stop lamp not working not working of front brake (4.3.1 (a) (ii)) | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Offside Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Indicator switch insecure |1.5.4| | 1 |
| Offside Front Position lamp switch insecure |1.1.4b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Handlebar grip missing (2.2.1 (d) (i)) | 1 |
| Central Rear Lower Suspension rod attachment bracket/mounting insecure locking nut missing (5.3.3 (a) (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Nearside Rear Footrest insecure bolt missing from footrest hanger (6.2.12 (a)) | 1 |
| Front Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear Brake fluid not visible reservoir painted over so not visable (1.1.10 (d) (iii)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake pipe excessively damaged |3.2.B2a| | 1 |
| Offside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Registration plate lamp issues | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure headlight bracket (6.1.1 (b) (i)) | 1 |
| Front Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Front Brake component modification unsafe Front pads not adequately bearing on disc surface. (1.1.21 (d) (i)) | 1 |
| Brake component insecure Rear caliper carrier. (1.1.21 (c)) | 1 |
| Offside Headlamp lens seriously defective Dipping to right. (4.1.1 (b) (ii)) | 1 |
| Brake performance not tested Front caliper insecure. (1.2.1 (g)) | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies lever |1.3.1a| | 1 |
| Offside Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Brake lever mounting cracked |3.1.2c| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Centre Front Drive chain worn to excess |6.2.1e| | 1 |
| Centre Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Lower Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Front Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Nearside Headlamp switch insecure |1.2.4| | 1 |
| Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired No clear beam pattern,low or high beam |1.2.3a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Brake pedal is so short and the brake cannot be readily applied |3.1.3c| | 1 |