| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 46 |
| Registration plate issues | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Headlamp insecure |1.2.3b| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Rear Wheel spoke excessively loose |4.2.1b| | 8 |
| Drive chain excessively tight |6.2.1d| | 8 |
| Brake hose excessively deteriorated | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Front Wheel spoke excessively loose |4.2.1b| | 6 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Rear Wheel spoke missing |4.2.1b| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear suspension component loose |2.4.A.1a| | 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 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Front position lamp insecure |1.1.1c| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Brake pedal pivots excessively worn |3.1.3a| | 2 |
| Fuel cap sealing washer missing |7.2.2c| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Horn is not a constant note |1.7.3c| | 2 |
| Rear position lamp incorrect colour |1.1.2b| | 2 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Brake pedal attachment screws loose |3.1.2b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Rear Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Wheel fixing loose (single fixing) bolt (5.2.1 (a) (ii)) | 1 |
| All direction indicators adversely affected by the operation of another lamp all wont work with lights off (4.4.3 (b)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Wheel excessively distorted buckled and eccentric (5.2.2 (c) (i)) | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Roller brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Fuel system component leaking fuel tap leaking when operated (6.1.3 (b) (i)) | 1 |
| Brake component modification unsafe front brake disc rubbing against caliper mounting bolt. (1.1.21 (d) (i)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected Increase in engine speed l/h lock. |6.2.7 |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 Direction indicator missing |1.5.1a| | 1 |
| Brake lever pivots excessively worn |3.1.3a| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Brake performance not tested |3.3| | 1 |
| Brake component modification adversely affecting braking performance incorrect rear caliper not fitting the disc fully and only less than half the pad in contact with disc (1.1.21 (d) (ii)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Throttle operating incorrectly won`t return |6.2.1f| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Wheel spoke missing |4.2.1b| | 1 |
| Rear Lower Rear suspension bush has excessive free play link arm to damper pivot |2.4.A2a|i|| | 1 |
| Rear Brake pedal has inadequate reserve travel suspect hydraulic systrem needs bleeding |3.1.3b| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear All direction indicators obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Nearside Direction indicator missing |1.5.1a| | 1 |
| Offside Direction indicator missing |1.5.1a| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear Brake pedal attachment screws loose |3.1.2b| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Rear Riders seat insecure |6.2.1a| | 1 |
| Direction indicators not working both sides |1.5.1c| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Centre Rear Lower Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Offside Outer Upper Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Offside Rear Brake hose excessively kinked |3.2.B3a| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Wheel fixing loose |multiple fixings| |5.2.1 |a| |i|| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing split pin missing |3.2.A1j| | 1 |
| Drive belt excessively loose. |6.2.1d| | 1 |
| Stop lamp does not illuminate immediately a brake applies hand lever |1.3.1a| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking kick start |6.1.1c| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear wheel bearings are excessively tight |2.4.A.2c| | 1 |
| Rear Wheel fractured significantly reducing the original strength |4.2.1a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| All direction indicators not working with engine revs (4.4.1 (a) (ii)) | 1 |
| Front Brake disc insecure loose bolts (1.1.14 (a) (ii)) | 1 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 1 |
| Stop lamp not working |1.2.1b| | 1 |
| Nearside Front Outer Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c| | 1 |
| Nearside Front Inner Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c| | 1 |
| Offside Front Inner Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c| | 1 |
| Offside Front Outer Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c| | 1 |
| Nearside Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 1 |
| Offside Front suspension has excessive play in a upper suspension ball joint |2.5.B.1a| | 1 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 1 |
| Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 1 |
| Nearside Front Upper Front suspension ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 1 |
| Offside Front Lower Front suspension ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 1 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 1 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 1 |
| Brake pedal has excessive side movement indicating a badly worn bearing or pivot |3.3.A.1d| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Lower Rear mono-shock insecure |2.4.B.4| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Offside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Wheel has an excessively eccentric bead rim. front wheel is out of shape |4.2.2| | 1 |
| Wheel has an excessively eccentric bead rim. the rear wheel is out of shape |4.2.2| | 1 |
| Rear reflector on motorcycle missing missing |1.4.1| | 1 |
| Headlamp aim not tested no beam image |1.6| | 1 |
| Horn sounds harsh or grating poor sound quality |1.7.3c| | 1 |
| Rear shock absorber has inadequate damping effect. no damping effect |2.4.A.3b| | 1 |
| Exhaust has a major leak of exhaust gases manifold leaking (6.1.2 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Direction indicator incorrect colour Flashing white |4.4.3 |a|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Suspension component mounting modified so the suspension is inoperative |5.3.3 |c| |ii|| | 1 |
| Roller brake test brake efficiency less than 27.5% overall |1.2.2 |a| |ii|| | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Rear Brake pedal pivot has excessive free play (1.1.1 (b)) | 1 |
| Rear Brake master cylinder insecure (1.1.10 (c)) | 1 |
| Shock absorber has an excessively worn bush Rear shock lower bearing. (5.3.2 (c)) | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Wheel spoke excessively bent |4.2.1b| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake component modification adversely affecting braking performance disc to small pads making less than 50% contact (1.1.21 (d) (ii)) | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| All direction indicators adversely affected by the operation of another lamp headlight (4.4.3 (b)) | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Registration plate lamp issues | 1 |
| Nearside Footrest insecure retaining split pin missing (6.2.12 (a)) | 1 |
| Brake component insecure rear brake linkage rod adjuster nut (1.1.21 (c)) | 1 |
| Rear Wheel spoke missing (5.2.2 (d)) | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Rear Lower Suspension arm pin or bush excessively worn swing arm exesive movment (5.3.4 (a) (i)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |