| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Headlamp switch faulty |1.2.4| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear reflector on motorcycle missing (1.4.1) | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Registration plate issues | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Throttle operating incorrectly (6.2.1f) | 1 |
| Rear Rear wheel spindle loose (2.4.A.2b) | 1 |
| Front Headlamp switch insecure (1.2.4) | 1 |
| Front Headlamp insecure (1.2.3b) | 1 |
| Position lamp switch insecure (1.1.4b) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Clutch lever positioned so it cannot be readily operated (6.2.7 (b)) | 1 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Footrest missing |6.2.1a| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Front Brake master cylinder severely corroded |3.2.B1b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Offside Front Brake component insecure (1.1.21 (c)) | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Lower Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Footrest insecure excessively bent
|6.2.1a| | 1 |
| Nearside Rear Footrest insecure does not lock into place
|6.2.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear wheel adjustment nuts loose |6.2.1h| | 1 |
| Nearside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking Handelbar clamp loose |6.1.1c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Headlamp aim headlamp damaged and function impaired NO IMAGE ON DIPP BEAM |1.2.3a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts INSICURE |3.2.B2c| | 1 |
| Exhaust mounting missing INSICURE |7.1.1c| | 1 |
| Throttle operating incorrectly TO HIGH AT IDLE |6.2.1f| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Exhaust mounting does not fully support the exhaust system RUBBING ON REAR COIL SPRING |7.1.1.c| | 1 |
| Steering headbearing has excessive free play & STIFF OPERATION |2.2.2| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 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 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Headlamp aim not tested [low beam not working] (4.1.2 (b)) | 1 |
| Brake hose damaged | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Stop lamp does not illuminate immediately a brake applies brake control 2 |1.3.1a| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 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 Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |