| Most common failures | No# failures |
|---|
| Steering headbearing has excessive free play |2.2.2| | 16 |
| Drive chain excessively loose |6.2.1d| | 13 |
| Headlamp aim out of alignment | 12 |
| Registration plate issues | 12 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Offside Front Footrest insecure |6.2.1a| | 5 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Nearside Front Footrest insecure |6.2.1a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front mudguard insecure |2.3.7| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear position lamp obscured more than 50% |1.1.1d| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Registration plate lamp issues | 2 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 2 |
| Parking brake lever has no reserve travel |3.1.6b| | 2 |
| Rear parking brake recording little or no effort | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear suspension has a modification which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Footrest insecure n/s o/s rear |6.2.1a| | 1 |
| Brake linkage excessively corroded |3.2.A1c| | 1 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 1 |
| Offside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.C.1a| | 1 |
| Parking brake efficiency below requirements |3.7.C.1b| | 1 |
| Rear Shock absorber has an excessively worn bush |2.7.4| | 1 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 1 |
| Front Front position lamp|s| not working |1.1.A.3b| | 1 |
| An item not tested |Manual| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Offside Rear Lower Brake locking device missing split pin |3.2.A1e| | 1 |
| Centre Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Brake pedal has inadequate reserve travel excessive travel |3.1.3b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Exhaust system insecure |6.1.2 |a|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear suspension bush has excessive free play rear swing arm |2.4.A2a|i|| | 1 |
| Nearside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Rear suspension bearing has excessive free play excessive play in rear swingarm bearings |2.4.A2a|i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride connecting link clip seriously damaged |6.2.1h| | 1 |
| Rear position lamp obscured more than 50% obscured by L plate |1.1.1d| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Brake hose damaged | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Horn missing |1.7.1| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp lens defective such that the emitted light is adversely affected |4.3.1 |b| |ii|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Offside Rear Wheel spindle or securing nut|s| so insecure that wheel security or steering control is adversely affected trailing arm to wheel hub security pin missing |5.2.1 |c| |ii|| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Centre Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Steering column movement between the shaft and steering wheel |2.1.2b| | 1 |
| Front Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Hazard warning lamps inoperative |1.4.B.1b| | 1 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 1 |
| Front front brake binding |3.7.B.1| | 1 |
| Offside Obligatory mirror missing |8.1.1| | 1 |
| Fuel cap/sealing device missing |7.2.4a| | 1 |
| Driver`s seat insecure |6.2.A.1| | 1 |
| Nearside Rear Wheel nut|s| loose |4.2.A.1e| | 1 |
| Offside Rear Wheel nut|s| loose |4.2.A.1e| | 1 |
| Nearside Obligatory mirror missing |8.1.1| | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 1 |
| Front Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 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 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Offside Drive chain excessively tight |6.2.1d| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear Upper Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Front Horn not working |1.7.3a| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Motorcycle structure adversely modified |6.1.1b| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Offside Rear Lower Motorcycle structure cracked |6.1.1a| | 1 |
| Stop lamp remains on when the brake is released rear brake |1.3.1e| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Steering operation restricted in free movement from lock to lock steering lock insecure (2.1.4 (c)) | 1 |
| Brake pedal pivot excessively tight (1.1.1 (a)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Hazard warning lamps inoperative not working on o/s of vehicle. (4.4.1 (e)) | 1 |
| Brake component insecure Rear brake torque arm loose (1.1.21 (c)) | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Drive chain sprocket excessively loose Bearing Worn (6.1.7 (c) (i)) | 1 |
| Offside Front Brake clevis joint insecure brake lever clevis pin securing nut missing (1.1.15 (c)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Position lamp not working centre position lamp (4.2.1 (a)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp not working Hand (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working Foot (4.3.1 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Rear Footrest missing both (6.2.12 (a)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Drive chain worn to excess excessive tight part (6.1.7 (c) (i)) | 1 |
| Engine mounting/bracket bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |