| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 39 |
| Registration plate issues | 16 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Horn not working |1.7.3a| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn control not functioning. |1.7.2b| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Brake performance not tested |3.3| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| 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| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| 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|| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Sidecar wheel alignment has excessive toe-out |5.3.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Nearside Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Riders seat with a defective supporting structure |6.2.5 |a| |i|| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Brake locking device missing Rear brake torque arm split pin |3.2.A1e| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Upper Fork yoke deformed |2.1.1b| | 1 |
| Rear wheel spindle securing nut locking device missing spindle split pin missing |2.4.A.2b| | 1 |
| Offside Front Brake hose leaking fluid |3.2.B4| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Brake hose leaking |1.1.12 |c|| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Front Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front wheel bearings have excessive free play ********** cannot be checked wheel binding too much ************* |2.3.5b| | 1 |
| Front Wheel has an excessively distorted bead rim. ********** cannot be checked wheel binding too much ************* |4.2.2| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Central Front Horn not working |7.7 |a| |ii|| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Suspension attachment bracket/mounting insecure swinging arm spindle |5.3.3 |a| |i|| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Upper Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Horn is not continous or uniform |1.7.3c| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Brake lever mounting cracked |3.1.2c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Rear Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 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 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp when brake is applied (4.2.3 (b)) | 1 |