| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Direction indicators not working |1.5.1c| | 8 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front suspension has inadequate damping effect. |2.3.6c| | 4 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 3 |
| Front Wheel spoke excessively loose |4.2.1b| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 2 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Registration plate issues | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp missing |4.1.1 |a| |ii|| | 2 |
| Front Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 2 |
| Rear Wheel spoke excessively loose ALL. |5.2.2 |d|| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking stand dropping |6.1.1c| | 2 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Horn not working |1.7.3a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Horn is not continous or uniform |1.7.3c| | 1 |
| Horn not working repaired (7.7 (a) (ii)) | 1 |
| Headlamp not working on dipped beam repaired (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam repaired (4.1.1 (a) (ii)) | 1 |
| All position lamps not working repaired (4.2.1 (a)) | 1 |
| Registration plate lamp issues | 1 |
| Wheel more than one fixing loose tighten and a split pin (5.2.1 (a) (ii)) | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Rear Motorcycle structure excessively corroded around suspension mounts |6.1.1a| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Offside Front suspension has excessive corrosion which reduces the strength of a load bearing member or its supporting structure. r/h fork leg holed& corroded |2.3.8| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Front brake lever bolt locking nut |6.2.1h| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Rear brake pedel bracket nut loose |6.2.1h| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Direction indicator not working all four |1.5.1c| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Lower Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Direction indicators flashing more than 120 times per minute all |1.5.1c| | 1 |
| All position lamps do not illuminate immediately when switched on all plus dipped beam |1.1.3a| | 1 |
| Brake performance not tested due to stand |3.3| | 1 |
| Direction indicators not working not flashing |1.5.1c| | 1 |
| All position lamps do not illuminate immediately when switched on also main and dipped beam |1.1.3a| | 1 |
| Brake performance not tested due to throttle jaming |3.3| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Wheel fixing missing (single fixing) (5.2.1 (a) (ii)) | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Front Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Handlebar handgrip missing |2.1.1c| | 1 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Stop lamp not working rear pedal switch |4.3.1 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 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 |
| All direction indicators adversely affected by the operation of another lamp |4.4.3 |b|| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside Rear Lower Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Nearside Front Upper Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Wheel more than one fixing missing (5.2.1 (a) (ii)) | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Brake back plate|s| securing bolt|s| missing |3.2.A1j| | 1 |
| All direction indicators not working not flashing (4.4.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp not working foot brake (4.3.1 (a) (ii)) | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Direction indicator obscured |1.5.1a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |