| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 20 |
| Registration plate issues | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 5 |
| Offside Front Direction indicators not working |1.5.1c| | 5 |
| Nearside Rear Direction indicators not working |1.5.1c| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 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 |
| Horn not working |1.7.3a| | 2 |
| Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam dip not working (4.1.1 (a) (ii)) | 1 |
| Shock absorber insecurely attached either loose or worn mounting (5.3.2 (a) (i)) | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Offside Rear Direction indicator not working right hand rear indicator |4.4.1 |a| |ii|| | 1 |
| Front Headlamp not working on dipped beam front headlight not working on dip |4.1.1 |a| |ii|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort excessive fluctuation of rear brake |1.2.1 |e|| | 1 |
| Stop lamp not working front brake switch (4.3.1 (a) (ii)) | 1 |
| Brake disc insecure all bolts loose (1.1.14 (a) (ii)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Brake hose damaged | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Position lamp likely to become detached Screws missing (4.2.1 (c) (ii)) | 1 |
| Offside Rear Direction indicator with a multiple light source more than 1/2 not functioning |4.4.1 |a| |ii|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Roller brake test indicates a severely grabbing brake fitted another hub. |3.3.A1b| | 1 |
| Rear position lamp deteriorated and function impaired showing white light. |1.1.1b| | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Rear wheel insecure locking nuts missing |4.2.3b| | 1 |
| Steering linkage has excessive free play handlebars move excesively while front wheel is held |2.2.2| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Suspension component pin or bush excessively worn lower suspension pin and or bush (5.3.4 (a) (i)) | 1 |
| Front Wheel damaged or distorted to the extent that control of the motorcycle is likely to be adversely affected (5.2.2 (c) (ii)) | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Steering lock stop maladjusted |2.1.3| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements Not loud enough to be heard by other road users (7.7 (c)) | 1 |
| Front Road spring mounting insecure |5.3.1 |a| |i|| | 1 |
| Rear Road spring mounting insecure |5.3.1 |a| |i|| | 1 |
| Front Brake hose leaking |1.1.12 |c|| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Front Lower Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Headlamp switch faulty tell tail lights wrong way round |1.2.4| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake hose leaking (1.1.12 (c)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |