| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 46 |
| Rear reflector on motorcycle missing |1.4.1| | 32 |
| Registration plate issues | 29 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Drive chain excessively loose |6.2.1d| | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 12 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 11 |
| Steering headbearing has excessive free play |2.2.2| | 11 |
| Horn not working |1.7.3a| | 10 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 9 |
| Drive chain worn to excess |6.2.1e| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Direction indicators not working |1.5.1c| | 6 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 6 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 6 |
| Rear Footrest missing |6.2.1a| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 4 |
| Front Horn not working |1.7.3a| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| 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| | 4 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Direction indicators not working |1.5.1c| | 3 |
| Rear Direction indicators not working |1.5.1c| | 3 |
| Rear Locking device|s| 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 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 3 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 3 |
| Brake hose excessively deteriorated | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 3 |
| Brake hose damaged | 3 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Throttle operating incorrectly |6.2.1f| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Suspension component modified so the suspension is inoperative |5.3.3 |c| |ii|| | 2 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Direction indicator missing |1.5.1a| | 2 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Fuel tank leaking |7.2.1a| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Registration plate lamp issues | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Front wheel spindle securing nut locking device missing |2.3.3a| | 2 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Front suspension assembly component excessively bent |2.3.1| | 2 |
| Front Upper Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Lower Fork yoke deformed |2.1.1b| | 2 |
| Central Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Rear reflector on sidecar missing |1.4.1| | 1 |
| Front Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Wheel spoke missing |4.2.1b| | 1 |
| Nearside Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Front Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Position lamp switch insecure |1.1.4b| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Front Fuel system component leaking |7.2.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Fuel system component leaking carb leaking |sticking valve| |6.1.3 |b| |i|| | 1 |
| Offside Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Front Handlebar fouling on the fuel tank or bodywork on full lock handle bars hitting the radiator on left hand lock |2.1.4 |b|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Centre Rear Lower Rear reflector on motorcycle missing |1.4.1| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Nearside Front Front suspension assembly component loose |2.3.1| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Front wheel insecure |4.2.3b| | 1 |
| Front Brake component has an inadequate repair |3.1.5| | 1 |
| Offside Front Upper Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Front Exhaust mounting missing |7.1.1c| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Fuel hose insecure fuel tap to carb (6.1.3 (a) (i)) | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure wheel nut split pin missing (6.1.1 (b) (i)) | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Centre Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Position lamp not working front side light not working (4.2.1 (a)) | 1 |
| Rear Footrest missing rear pegs missing (6.2.12 (a)) | 1 |
| Rear Lower Suspension component ball joint excessively worn bottom suspension bush worn (5.3.4 (a) (i)) | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Wheel fractured significantly reducing the original strength |4.2.1a| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Rear Brake hose excessively kinked |3.2.B3a| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Horn not working not working with lights on (7.7 (a) (ii)) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Gradient brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.D1b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Front Brake lever cracked |3.1.2c| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Wheel modified significantly reducing the original strength |4.2.1a| | 1 |
| Rear Wheel modified significantly reducing the original strength |4.2.1a| | 1 |
| Front An item not tested |Manual| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Upper Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Rear Rear position lamp insecure |1.1.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Rear suspension drop link mounting bolt nut missing |6.2.1h| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake pedal pivot excessively tight Horseshoe (1.1.1 (a)) | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Stop lamp not working lever |4.3.1 |a| |ii|| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Motorcycle structure adversely modified |6.1.1b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |