| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 33 |
| Rear reflector on motorcycle missing |1.4.1| | 24 |
| Registration plate issues | 22 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 6 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 6 |
| Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear mono-shock pivot seized |2.4.B.4| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Rear Direction indicator insecure |1.5.3b| | 3 |
| Horn not working |1.7.3a| | 3 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Registration plate lamp issues | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Horn missing |1.7.1| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Rear suspension component loose |2.4.A.1a| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Brake lagging in operation |1.2.1 |d|| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Drive chain excessively loose chain has no adjustment left |6.2.1d| | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Lower Rear suspension component seized |2.4A2a|ii|| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Brake rod insecure pedal to master cylinder |1.1.15 |c|| | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Rear Stop lamp not working control (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator 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 |
| Horn not working (7.7 (a)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front Brake hose excessively damaged (1.1.12 (b) (ii)) | 1 |
| Offside Rear Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Front Brake component is fractured |3.1.5| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Fork yoke deformed insecure bottom yoke |2.1.1b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Brake hose damaged | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Handlebar deformed ns mounting clamp bent ,handlebars not level when bike pointing straight |2.1.1b| | 1 |
| Nearside Front Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Front Horn missing |1.7.1| | 1 |
| Front Front shock absorber seal failed and leaking oil both |2.3.3| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Stop lamp not working front control |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Headlamp aim not tested rear suspension seized down |4.1.2 |b|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Rear Brake fluid contaminated |1.8 |a|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear reflector missing covered by L plate |4.8.2 |a| |ii|| | 1 |
| Rear Lower Shock absorber has an excessively worn bush all lower bushes siezed |5.3.2 |c|| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp insecure adjuster screw missing |4.1.1 |c|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Shock absorber has negligible damping effect linkage bearings seized (5.3.2 (b)) | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Centre Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Brake caliper inadequately mounted (1.1.16 (c) (i)) | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Direction indicators flashing more than 120 times per minute All |1.5.1c| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Central Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Rear Position lamp likely to become detached the mudguard is insecure (4.2.1 (c) (ii)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |