| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 23 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 11 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Throttle operating incorrectly |6.2.1f| | 11 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Registration plate issues | 9 |
| Drive chain worn to excess |6.2.1e| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 7 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Exhaust excessively deteriorated |7.1.1a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear Brake locking device missing |3.2.A1e| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Brake locking device missing |3.2.A1e| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 2 |
| Rear Brake locking device insecure |3.2.A1e| | 2 |
| Motorcycle structure excessively corroded |6.1.1a| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Brake caliper leaking |1.1.16 |b| |i|| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Nearside Inner Rear Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Front Brake cable insecure (1.1.15 (c)) | 1 |
| Brake hose damaged | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Stop lamp not working from front and rear brakes |4.3.1 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level |1.1.10 |d| |ii|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Nearside Rear Shock absorber insecurely attached lower locknut loose |5.3.2 |a| |i|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Registration plate lamp issues | 1 |
| Fork yoke deformed |2.1.1b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Centre Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Brake back plate|s| securing bolt|s| missing securing nut is missig totaly |3.2.A1j| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Lower Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Stop lamp remains on when the brake is released rear pedal |1.3.1e| | 1 |
| Rear Rear suspension bush has excessive free play swing arm |2.4.A2a|i|| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front Floor brake test indicates a binding brake Disc pads assembled incorrectly! |3.3.C2c| | 1 |
| Offside Rear shock absorber insecurely mounted Lock nuts loose! |2.4.A.3b| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering Mirrors hitting windsreen! |2.1.2a| | 1 |
| Nearside Front Footrest insecure Bolt missing! |6.2.1a| | 1 |
| Brake excessively binding (1.2.1 (f)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Brake rod insecure |1.1.15 |c|| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Nearside Rear Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Offside Rear Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |