| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Nearside Front Footrest insecure |6.2.1a| | 4 |
| Registration plate issues | 4 |
| Registration plate lamp issues | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Steering rack gaiter split |2.2.D.2d| | 2 |
| Parking brake efficiency below requirements |3.7.C.1b| | 2 |
| Offside Rear Rear wheel bearing has excessive play |2.6.2| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Steering column top bearing excessively worn |2.1.2c| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Horn not working |1.7.3a| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Nearside Front suspension has a suspension upper ball joint securing nut not locked |2.5.B.1a| | 1 |
| Offside Front suspension has a suspension upper ball joint securing nut not locked |2.5.B.1a| | 1 |
| Nearside Lower Ball joint ball pin shank loose |2.2.B.1c| | 1 |
| Offside Front Front wheel bearings have excessive free play |9.2.8c| | 1 |
| Nearside Rear Front wheel bearings have excessive free play |9.2.8c| | 1 |
| Offside Rear Front wheel bearings have excessive free play |9.2.8c| | 1 |
| Offside Steering rack gaiter split |2.2.D.2d| | 1 |
| Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.C.1a| | 1 |
| Brake hose excessively deteriorated | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Lower Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Direction indicators not working |1.5.1c| | 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 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Offside Track rod end ball pin shank loose |2.2.B.1c| | 1 |
| Nearside Track rod end loose |2.2.B.1d| | 1 |
| Indicator switch faulty |1.4.A.1| | 1 |
| All position lamps not working |1.1.A.3b| | 1 |
| Centre Rear brake disc contaminated by oil |3.5.1h| | 1 |
| Nearside Rear Wheel nut|s| loose |4.2.A.1e| | 1 |
| Offside Rear Wheel nut|s| loose |4.2.A.1e| | 1 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 1 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 1 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 1 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 1 |
| Offside Rear Upper Sub-frame has excessive play in a pin/bush |2.4.G.2| | 1 |
| Rear parking brake recording little or no effort | 1 |
| Parking brake lever ratchet mechanism is excessively worn |3.1.5| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Centre Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Centre Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Centre Upper Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Rear Direction indicators not working |1.4.A.2c| | 1 |
| Hazard warning switch faulty |1.4.B.1d| | 1 |
| Lower Steering column universal joint has excessive play |2.1.5| | 1 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 1 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 1 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 1 |
| Rear Additional braking device component damaged |3.6.I.1| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Brake pipe fouled by moving parts |3.6.B.2a| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Vehicle Identification Number not permanently displayed |6.3.5.a| | 1 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Nearside Front Upper Suspension arm synthetic mounting deteriorated resulting in excessive movement |2.4.G.2| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Steering system fouling |2.2.D.2a| | 1 |
| Offside Steering system fouling |2.2.D.2a| | 1 |
| Steering system has excessive free play detected at the steering wheel |steering rack fitted| |2.2.A.1b| | 1 |
| Nearside Rear Wheel insecure |4.2.A.1c| | 1 |
| Offside Rear Wheel insecure |4.2.A.1c| | 1 |
| Wheel nut|s| loose |4.2.A.1e| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear suspension bush has excessive free play Swinging arm |2.4.A2a|i|| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Headlamp not working on main beam |1.7.5a| | 1 |
| Rear fog lamp missing |1.3.2a| | 1 |
| Rear fog lamp tell tale missing |1.3.1b| | 1 |
| Rear fog lamp switch missing |1.3.1a| | 1 |
| Driver`s seat insecure |6.2.A.1| | 1 |
| Track rod end loose |2.2.B.1d| | 1 |
| Offside Front Front suspension has an insecurely locked unit in the upper support bearing assembly |2.5.B.3b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 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 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |