| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 42 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 19 |
| Registration plate issues | 16 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 8 |
| Front wheel bearings are excessively rough |2.3.5b| | 8 |
| Nearside Rear Direction indicators not working |1.5.1c| | 6 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 6 |
| Offside Rear Direction indicator not working |1.5.1c| | 6 |
| Offside Front Direction indicator not working |1.5.1c| | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Front Brake excessively binding |1.2.1 |f|| | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Offside Rear Direction indicators not working |1.5.1c| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Horn sound not in accordance with requirements (7.7 (c)) | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| Horn not working |1.7.3a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 4 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 3 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 3 |
| Rear position lamp incorrect colour |1.1.2b| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 2 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Registration plate lamp issues | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 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 |
| Front Stop lamp missing no stop light on front brake (4.3.1 (a) (ii)) | 1 |
| Rear Direction indicator not working no rear indicators (4.4.1 (a) (ii)) | 1 |
| Front Handlebar retaining device loose loose on lock (2.2.1 (b) (i)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute Not Flashing |1.5.1c| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute Not Flashing |1.5.1c| | 1 |
| Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Front Direction indicator not working not flashing |1.5.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Riders seat insecure not locking down |6.2.1a| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front position lamp does not illuminate immediately when switched on not working |1.1.3a| | 1 |
| Front Stop lamp missing stop limp not working |1.3.3a| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Central Front Lower Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Offside Front Upper Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Central Rear Upper Position lamp lens seriously defective (4.2.1 (b)) | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Offside Front Direction indicator not working not flashing (4.4.1 (a) (ii)) | 1 |
| Front Shock absorber has negligible damping effect suspension has no movement (5.3.2 (b)) | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Front wheel bearings are excessively rough also has play |2.3.5b| | 1 |
| Rear Upper Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Lower Position lamp not working (4.2.1 (a)) | 1 |
| Rear wheel has a missing wheel stud|s| |4.2.3a| | 1 |
| Direction indicators not working FR/O S |1.5.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock left hand steering stop damaged |2.1.4 |a|| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Wheel corroded to the extent that control of the motorcycle is likely to be adversely affected rear wheel covered in oil from engine leak |5.2.2 |c| |ii|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Direction indicator not working lights come on but dont flash (4.4.1 (a) (ii)) | 1 |
| Central Horn not working horn not working |7.7 |a| |ii|| | 1 |
| Nearside Direction indicator not working not working |4.4.1 |a| |ii|| | 1 |
| Central Position lamp not working front side light not working |4.2.1 |a|| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front brake control (4.3.2 (a) (iii)) | 1 |
| Brake fluid reservoir fluid level significantly below minimum level |1.1.10 |d| |ii|| | 1 |
| Brake hose damaged | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake pedal anti-slip provision missing |1.1.2 |c|| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Fuel tank leaking (6.1.3 (b) (i)) | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Position lamp showing white light to the rear |4.2.3 |a| |ii|| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Lower Position lamp showing white light to the rear |4.2.3 |a| |ii|| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Upper Position lamp not working |4.2.1 |a|| | 1 |
| Front Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Decelerometer brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake lever not illuminating stop lamp |1.3.1a| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Central Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| All direction indicators not working not flashing (4.4.1 (a) (ii)) | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Steering headbearing excessively stiff or notchy excessively notchy (2.2.2 (f) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on when on dipped beam setting |1.1.3a| | 1 |
| Stop lamp remains on when the brake is released front lever / resecure switch |1.3.1e| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Centre Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Rear All position lamps not working |4.2.1 |a|| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp aim not tested Dip beam inop. (4.1.2 (b)) | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Horn not loud enough to be heard by another road user insecure |1.7.3a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Headlamp insecure bulb |1.2.3b| | 1 |
| Front wheel insecure |front wheel rubbing on caliper| |4.2.3b| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Direction indicators not working r/h |1.5.1c| | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front brake switch |1.3.1a| | 1 |
| Front Stop lamp not working leaver (4.3.1 (a) (ii)) | 1 |
| Front Roller brake test indicates a severely grabbing brake At Constant Effort (3.3.A1b) | 1 |
| Horn not loud enough to be heard by another road user (1.7.3a) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Rear Brake pedal has inadequate reserve travel (3.1.3b) | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Central Rear Lower Stop lamp does not illuminate immediately a brake applies foot brake |1.3.1a| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front control not working (4.3.2 (a) (iii)) | 1 |
| Brake caliper insecure bolts loose (1.1.16 (c) (i)) | 1 |
| Wheel bearing has excessive play Side car wheel bearing (5.1.3 (a) (i)) | 1 |
| Central Rear Upper Stop lamp does not illuminate by the operation of both brake controls does not work when front brake pressed (4.3.2 (a) (iii)) | 1 |
| Central Front Upper Direction indicator not working both front indicators dont work (4.4.1 (a) (ii)) | 1 |
| Nearside Direction indicator not working (4.4.1 (a) (ii)) | 1 |