| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Registration plate lamp issues | 9 |
| Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Rear reflector missing |4.8.2 |a| |ii|| | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Front Position lamp not working |4.2.1 |a|| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Registration plate issues | 2 |
| All direction indicators not working |4.4.1 |a| |ii|| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Upper Throttle has a significant change in engine speed whilst moving the steering from lock to lock aftermarket bar end holding throttle open slightly, spacer fitted to make safe. |2.1.4| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Brake pipe excessively damaged |3.2.B2a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Stop lamp not working brake |4.3.1 |a| |ii|| | 1 |
| Rear Brake grabbing severely |1.2.1 |c|| | 1 |
| Front Headlamp lens seriously defective |4.1.1 |b| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Suspension arm pin or bush excessively worn swinging arm bushes |5.3.4 |a| |i|| | 1 |
| Rear Stop lamp not working from rear brake pedal control |4.3.1 |a| |ii|| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Suspension arm ball joint excessively worn swinging arm |5.3.4 |a| |i|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Suspension arm pin or bush excessively worn Swing arm |5.3.4 |a| |i|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen kick off to the right |4.1.2 |a|| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam MAIN BEAM IS OPERATED WITH DIP SWITH |4.1.3 |b|| | 1 |
| Dipswitch does not operate immediately when selected on main beam DIP IS OPERATED WITH MAIN BEAM SWITCH |4.1.3 |b|| | 1 |
| All direction indicators not working not flashing at all.. |4.4.1 |a| |ii|| | 1 |
| Rear Shock absorber has negligible damping effect Both rear shocks have no damping. |5.3.2 |b|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Offside Rear Direction indicator light intensity significantly reduced |4.4.3 |a|| | 1 |
| Central Upper Suspension arm pin or bush excessively worn Swing arm/engine pivot/mounting |5.3.4 |a| |i|| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Nearside Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Offside Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Handlebar excessively deformed |2.2.1 |c| |i|| | 1 |
| Position lamp not working |4.2.1 |a|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Suspension arm pin or bush excessively worn swingarm bushes (5.3.4 (a) (i)) | 1 |
| Offside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Suspension component pin or bush excessively worn swinging arm (5.3.4 (a) (i)) | 1 |
| Stop lamp not working foot brake (4.3.1 (a) (ii)) | 1 |
| Position lamp not working side light (4.2.1 (a)) | 1 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Brake excessively binding rear brake sticking on when applied lack of reserve travle (1.2.1 (f)) | 1 |
| Rear Suspension component pin or bush excessively worn swing arm (5.3.4 (a) (i)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front Brake lever is so short that the brake cannot be readily applied Half of lever broken off (1.1.2 (d)) | 1 |
| Steering operation restricted in free movement from lock to lock Steering jamming up on r/h lock (2.1.4 (c)) | 1 |
| Nearside Shock absorber has a serious fluid leak Fork seal leaking (5.3.2 (b)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Brake master cylinder defective but brake still operating lever action notchy (1.1.10 (b) (i)) | 1 |
| Offside Front Brake clevis joint excessively worn (1.1.15 (b)) | 1 |
| Offside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Rear Stop lamp not working on rear brake (4.3.1 (a) (ii)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Suspension rod attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Front Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Front Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Front Engine mounting/bracket missing (6.1.8 (a) (ii)) | 1 |
| Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Footrest insecure both (6.2.12 (a)) | 1 |
| Rear Brake pedal has insufficient reserve travel Needs adjustment (1.1.2 (a)) | 1 |
| Rear Suspension arm pin or bush excessively worn SWINGING ARM. (5.3.4 (a) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Brake linkage has abnormal movement of levers indicating excessive wear or maladjustment ROD MISSING (1.1.15 (f)) | 1 |
| Front Lower Shock absorber insecurely attached bolts missing from yoke (5.3.2 (a) (i)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |