| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Registration plate issues | 4 |
| Horn not working |1.7.3a| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride axle nut |6.2.1h| | 1 |
| Rear Brake clevis joint insecure brake |1.1.15 |c|| | 1 |
| Rear Brake pipe likely to become detached or damaged |1.1.11 |d| |ii|| | 1 |
| Nearside Rear Upper Shock absorbers has an excessively worn bush |5.3.2 |c|| | 1 |
| Offside Rear Upper Shock absorbers has an excessively worn bush |5.3.2 |c|| | 1 |
| Nearside Front Footrest insecure weld brocken |6.2.12 |a|| | 1 |
| Rear Sub-frame attachment bracket/mounting likely to fail |5.3.3 |b| |ii|| | 1 |
| Rear Sub-frame attachment bracket/mounting fractured |5.3.3 |b| |ii|| | 1 |
| Rear Sub-frame mounting modified so the suspension is likely to fail other components |5.3.3 |c| |ii|| | 1 |
| Rear Sub-frame mounting has an unsafe modification |5.3.3 |c| |i|| | 1 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 1 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 1 |
| Nearside Rear brake caliper securing device loose |3.5.1j| | 1 |
| Offside Rear brake caliper securing device loose |3.5.1j| | 1 |
| Rear Brake pedal pad not secure to the pedal |3.3.A.1c| | 1 |
| Rear Rear reflector missing o/s n/s |1.5.1a| | 1 |
| Nearside Rear Upper Shock absorber has an excessively worn bush |2.7.4| | 1 |
| Offside Rear Upper Shock absorber insecure |2.7.2b| | 1 |
| Nearside Rear Rear wheel bearing has excessive play |2.6.2| | 1 |
| Offside Rear Rear wheel bearing has excessive play |2.6.2| | 1 |
| Nearside Rear Parking brake lever is fouling adjacent parts of the vehicle fouling engine case |3.1.6b| | 1 |
| Front front brake binding |3.7.B.1| | 1 |
| Brakes imbalanced across an axle | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak Fork seal leaking |5.3.2 |b|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Steering operation restricted in free movement from lock to lock clutch cable holding back steering on lock (2.1.4 (c)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Direction indicator not working L/H Front (4.4.1 (a) (ii)) | 1 |
| Central Front Position lamp not working (4.2.1 (a) (ii)) | 1 |
| Offside Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure Locking device missing (6.1.1 (b) (i)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Suspension component pin or bush excessively worn Shock Linkage (5.3.4 (a) (i)) | 1 |
| Front Brake component insecure Hose (1.1.21 (c)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Nearside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Wheel spindle locking device missing Split pin (5.2.1 (d)) | 1 |
| Rear Upper Suspension rod pin or bush likely to become detached no split pin or lock nut on shock mount (5.3.4 (a) (ii)) | 1 |
| Nearside Rear Brake component inadequately mounted brake torque arm has no split pins or lock nuts fitted (1.1.21 (c)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |