| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Horn not working |1.7.3a| | 5 |
| Registration plate lamp issues | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Registration plate issues | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 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 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Brake hose excessively twisted also fitted incorrectly (1.1.12 (b) (ii)) | 1 |
| Front Shock absorber has negligible damping effect seals leaking (5.3.2 (b)) | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake component is excessively corroded |3.1.5| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 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 |
| Front Wheel spoke missing snapped (5.2.2 (d)) | 1 |
| Front Wheel spoke excessively loose several loose spokes (5.2.2 (d)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Position lamp likely to become detached |4.2.1 |c| |ii|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies both brakes |1.3.1a| | 1 |
| Central Front Lower Wheel more than one fixing loose (5.2.1 (a) (ii)) | 1 |
| Central Rear Lower Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Front Lower Brake caliper inadequately mounted (1.1.16 (c) (i)) | 1 |
| Central Front Upper Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Central Front Upper Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Offside Rear Lower Brake excessively binding (1.2.1 (f)) | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Stop lamp emits other than a steady red light flickers on and of,going off when brake fully applied |1.3.1b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Central Rear Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Front wheel spindle clamp bolt missing |6.2.1h| | 1 |
| Offside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front 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 Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Wheel more than one fixing loose |5.2.1 |a| |ii|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Centre Front Upper Headlamp insecure |1.2.3b| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies stop switch snapped |1.3.1a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Drive chain sprocket worn to excess front and rear |6.2.1e| | 1 |
| Wheel alignment incorrect which adversely affects the steering handle bars bent |2.5.1| | 1 |
| Rear wheel spindle loose chain adjusters loose |2.4.A.2b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Rear Brake clevis joint insecure Pedal Unsafe fixing (1.1.15 (c)) | 1 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Suspension rod ball joint excessively worn lower linkage |5.3.4 |a| |i|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Offside Rear Brake hose connection leaking (1.1.12 (c)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected Absence of locking nuts or spindle securing device. (5.2.1 (c) (ii)) | 1 |