| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 47 |
| Headlamp aim out of alignment | 25 |
| Horn not working |1.7.3a| | 23 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Drive chain excessively loose |6.2.1d| | 15 |
| Registration plate issues | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Headlamp insecure |1.2.3b| | 12 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 10 |
| Drive chain worn to excess |6.2.1e| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Rear reflector missing |4.8.2 |a| |ii|| | 6 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Offside Rear Direction indicators not working |1.5.1c| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 3 |
| Brake pedal pivots excessively worn |3.1.3a| | 3 |
| Fuel cap sealing washer missing |7.2.2c| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| 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 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride c clip with open end towards direction of rotation |6.2.1h| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake |1.3.1a| | 1 |
| Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Direction indicators not working no indicators fitted |1.5.1c| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Rear wheel bearings have excessive free play (2.4.A.2c) | 1 |
| Rear Drive chain worn to excess (6.2.1e) | 1 |
| Rear Rear shock absorber has inadequate damping effect. (2.4.A.3b) | 1 |
| Front Brake lever is so short and the brake cannot be readily applied (3.1.3c) | 1 |
| Horn not loud enough to be heard by another road user (1.7.3a) | 1 |
| Direction indicators affected by the operation of another lamp (1.5.1c) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Horn missing |1.7.1| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| An item not tested |Manual| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Direction indicator flashing more than 120 times per minute all |1.5.1c| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Stop lamp does not illuminate immediately a brake applies front lever |1.3.1a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 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 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket bolts loose and 1 missing |6.2.1h| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Rear Brake cylinder leaking (1.1.16 (b) (i)) | 1 |
| Registration plate lamp issues | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Horn not working new horn fitted (7.7 (a) (ii)) | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear suspension component loose mono shock linkage |2.4.A.1a| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Clutch lever shortened so it cannot be readily operated |6.2.7 |b|| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Nearside Front Direction indicator light intensity significantly reduced |4.4.3 |a|| | 1 |
| Rear Wheel hub excessively worn |5.2.1 |b| |i|| | 1 |
| Brake lever has inadequate reserve travel adjustment screw fouling throttle |3.1.3b| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Upper Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear suspension bearing has excessive free play swingarm |2.4.A2a|i|| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Brake cylinder leaking and braking performance affected |1.1.16 |b| |ii|| | 1 |
| Headlamp aim not tested Insecure |4.1.2 |b|| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Upper Motorcycle structure cracked pillion foot rest |6.1.1a| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Offside Rear All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| Nearside Rear All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Rear Brake hose leaking (1.1.12 (c)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Stop lamp insecure |1.3.3b| | 1 |
| Rear Rear position lamp insecure |1.1.1c| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear suspension bearing has excessive free play Swing arm |2.4.A2a|i|| | 1 |