| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 32 |
| Headlamp aim beam image kick up to the offside |1.6| | 16 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Front wheel bearings have excessive free play |2.3.5b| | 13 |
| Registration plate issues | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 9 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Offside Rear Footrest missing |6.2.1a| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Nearside Rear Footrest missing |6.2.1a| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 3 |
| Horn not working |1.7.3a| | 3 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Fuel system component insecure |7.2.1b| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 3 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front position lamp damaged and function impaired |1.1.1b| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Brake hose damaged | 2 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Drive chain worn to excess |6.2.1e| | 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 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front 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|| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Nearside Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Offside Handlebar cracked |2.1.1b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Offside Front Footrest missing |6.2.1a| | 1 |
| Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Wheel excessively corroded |5.2.2 |c| |i|| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Centre Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Centre Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 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 |
| Centre Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on New bulb fitted and adjusted terminals |1.1.3a| | 1 |
| Headlamp aim beam image kick up to the offside Taped kick up beam. |1.6| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Offside Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Offside Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Offside Front Upper Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride footpeg has circlip missing |6.2.1h| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Upper An item not tested |Manual| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Direction indicators flashing less than 60 times a minute (1.5.1c) | 1 |
| Clutch lever positioned so it cannot be readily operated. insecure (6.2.1g) | 1 |
| Headlamp switch insecure (1.2.4) | 1 |
| Brake pedal has inadequate reserve travel (3.1.3b) | 1 |
| Nearside Front Direction indicator missing (1.5.1a) | 1 |
| Offside Front Direction indicator missing (1.5.1a) | 1 |
| Nearside Front Direction indicator not working (1.5.1c) | 1 |
| Offside Front Direction indicator not working (1.5.1c) | 1 |
| Offside Rear Direction indicator not working (1.5.1c) | 1 |
| Nearside Rear Direction indicator not working (1.5.1c) | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Stop lamp light intensity significantly reduced (4.3.3 (a) (ii)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure plastic fairing (6.1.1 (b) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Rear Brake master cylinder insecure (1.1.10 (c)) | 1 |