| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 44 |
| Drive chain excessively loose |6.2.1d| | 16 |
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Drive chain worn to excess |6.2.1e| | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Registration plate issues | 10 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 7 |
| Rear reflector on motorcycle obscured |1.4.1| | 7 |
| Horn not working |1.7.3a| | 7 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 6 |
| Direction indicator incorrect colour |1.5.1b| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Registration plate lamp issues | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Headlamp insecure |1.2.3b| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 4 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 4 |
| Rear reflector on motorcycle obscured |1.4.2b| | 3 |
| Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Centre Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Front Direction indicator incorrect colour white |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour white |1.5.1b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies not working of front brake |1.3.1a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Front Brake lining|s| contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear reflector on motorcycle obscured behind L plat |1.4.2b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front wheel has a loose wheel bolt|s| |4.2.3a| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake pedal attachment screws loose |3.1.2b| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 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 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 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 |
| Rear Direction indicator obviously incorrectly positioned built in indicator & tail light indicators not spaced correct |4.4.3 |a|| | 1 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain ajuster |6.2.1h| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain ajuster |6.2.1h| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Direction indicator incorrect colour white and discolored |1.5.1b| | 1 |
| Rear wheel bearings have excessive free play collapsed |2.4.A.2c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Nearside Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Direction indicator incorrect colour |1.5.1b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Steering headbearing has excessive free play top nut loose |2.2.2| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock right hand lock |2.1.4| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Stop lamp emits other than a steady red light FLICKERING |1.3.1b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock REVS WHEN TURNING HANDLEBARS
CABLE NEEDS ADJUSTING |2.1.4| | 1 |
| Front Headlamp insecure MOUNTS BROKEN |1.2.3b| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front brake |1.3.1a| | 1 |
| Central Rear reflector on motorcycle damaged and function impaired covered by l plate |1.4.2a| | 1 |
| Rear reflector on motorcycle obscured covered by L plate |1.4.2b| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on not working |1.1.3a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Clutch lever shortened so it cannot be readily operated |6.2.7 |b|| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Nearside Front Direction indicator lens defective such that the emitted light is adversely affected |4.4.1 |b| |ii|| | 1 |
| Offside Rear Direction indicator lens defective such that the emitted light is adversely affected |4.4.1 |b| |ii|| | 1 |
| Nearside Front Brake disc contaminated oil & grease! |1.1.14 |b|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition Rear silencer holed! |8.1.1 |a|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Drive chain sprocket 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 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Fuel cap ineffective cannot open fuel cap to check seal (6.1.3 (b) (i)) | 1 |
| Stop lamp not working not working off front brake (4.3.1 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak front forks (5.3.2 (b)) | 1 |
| Front Suspension component has excessive wear or free play (5.3.3 (d)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Rear All direction indicators incorrect colour white (4.4.3 (a)) | 1 |
| Offside Rear All direction indicators incorrect colour white (4.4.3 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Front Clutch lever shortened so it cannot be readily operated (6.2.7 (b)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Stop lamp not working brake control one (4.3.1 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Rear Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Nearside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak at both fork seals (5.3.2 (b)) | 1 |
| Nearside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |