| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Registration plate issues | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Horn not working |1.7.3a| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Headlamp switch faulty |1.2.4| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Horn not working (7.7 (a)) | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Stop lamp remains on when the brake is released Front brake lever not correct for bike - doesn`t press switch when releasing lever |1.3.1e| | 2 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Engine mounting/bracket missing (6.1.8 (a) (ii)) | 1 |
| Rear Exhaust has a major leak of exhaust gases Gasket missing and clamp broken @ silencer joint (6.1.2 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Stop lamp does not illuminate immediately a brake applies when foot brake applied |1.3.1a| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Drive chain worn to excess seized links etc (6.1.7 (c) (i)) | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Offside Rear Lower Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| An item not tested |Manual| | 1 |
| Suspension arm pin or bush excessively worn Swingarm |5.3.4 |a| |i|| | 1 |
| Brake caliper inadequately mounted and braking performance affected Rear |1.1.16 |c| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen Poor beam pattern |4.1.2 |a|| | 1 |
| Brake hose leaking rear |1.1.12 |c|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake caliper leaking and braking performance affected (1.1.16 (b) (ii)) | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 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 Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Valve stem seriously damaged Both (5.2.3 (j)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Registration plate lamp issues | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Nearside Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Offside Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Front Brake component inadequately mounted |1.1.21 |c|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Central Front Headlamp missing Lens missing |1.2.3a| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Centre Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Front Horn missing |1.7.1| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle cable outer broken (6.2.7 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Brake performance not tested |3.3| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake lever |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Front Brake disc contaminated by leaking fork seal (1.1.14 (b)) | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Engine mounting/bracket bracket missing bolt and bung missing |6.1.8 |a| |ii|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |