| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Registration plate issues | 5 |
| Rear Brake excessively binding (1.2.1 (f)) | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain split link circlip |6.2.1h| | 1 |
| Nearside Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Stop lamp not working Front lever (4.3.1 (a) (ii)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Brake hose excessively stretched (1.1.12 (b) (ii)) | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Exhaust has part of the system missing baffle |7.1.1a| | 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 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain sprocket excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Registration plate lamp issues | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Front Headlamp aim not tested |4.1.2 |b|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Wheel excessively distorted |5.2.2 |c| |i|| | 1 |
| Rear Upper Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Horn not working |1.7.3a| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Central Rear Stop lamp lens defective such that the emitted light is adversely affected (4.3.1 (b) (ii)) | 1 |
| Central Front Horn not working (7.7 (a)) | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Stop lamp not working from front lever (4.3.1 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Direction indicator obscured |1.5.1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Footrest missing passenger footrests are missing |6.2.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front shock absorber seal failed and leaking oil OIL ALL OVER BRAKES FROM FORKS |2.3.3| | 1 |
| Rear Drive chain excessively loose BOTH CHAIN SPROCKETS ARE WORN OUT |6.2.1d| | 1 |
| Front Drive chain sprocket worn to excess AND REAR |6.2.1e| | 1 |
| All position lamps do not illuminate immediately when switched on no plate light inop. |1.1.3a| | 1 |
| Front Brake hose stretched by suspension movement cable tied to strut |3.2.B3b| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake |1.3.1a| | 1 |
| Drive chain excessively loose loose and worn |6.2.1d| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Upper Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Lower Drive chain worn to excess |6.2.1e| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |