| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Registration plate issues | 17 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Rear reflector missing (4.8.2 (a) (ii)) | 9 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 7 |
| Registration plate lamp issues | 7 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 6 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 5 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Rear Brake disc contaminated (1.1.14 (b)) | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Wheel fixing missing (single fixing) split pin missing (5.2.1 (a) (ii)) | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Horn sound not in accordance with requirements not loud enough (7.7 (c)) | 1 |
| Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Rear Brake caliper inadequately mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen dipping to wrong side (4.1.2 (a)) | 1 |
| Rear Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Rear Brake caliper leaking and braking performance affected (1.1.16 (b) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn Swingarm bush (5.3.4 (a) (i)) | 1 |
| Rear Suspension arm pin or bush excessively worn Linkage bush (5.3.4 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Wheel fixing missing |single fixing| |5.2.1 |a| |ii|| | 1 |
| Rear Wheel fixing missing |single fixing| |5.2.1 |a| |ii|| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear suspension component loose Linkage |2.4.A.1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain excessively tight tight spot in chain |6.1.7 |k| |i|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Lower Suspension arm ball joint excessively worn bottom of shock absorber (5.3.4 (a) (i)) | 1 |
| Rear Wheel fixing missing |single fixing| rear spindle locking device missing | split pin now fitted| |5.2.1 |a| |ii|| | 1 |
| Exhaust has a major leak of exhaust gases at center (6.1.2 (a)) | 1 |
| Rear reflector defective or damaged by more than 50% of the reflecting surface (4.8.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside 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 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Central Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Suspension rod pin or bush excessively worn lower shock brg (5.3.4 (a) (i)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Central Rear Lower Suspension component pin or bush excessively worn excessive play in suspension bush (5.3.4 (a) (i)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Horn missing (1.7.1) | 1 |
| Central Front Direction indicators not working |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Exhaust excessively deteriorated broke |7.1.1a| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Headlamp reflector missing (4.1.1 (b) (ii)) | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar Grip insecure (2.2.1 (d) (ii)) | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Wheel excessively distorted |5.2.2 |c| |i|| | 1 |
| Motorcycle structure is so deformed it is likely to adversely affect braking or steering frame bent |6.1.1 |a| |ii|| | 1 |
| Front Wheel more than one fixing missing |5.2.1 |a| |ii|| | 1 |
| Rear Wheel more than one fixing missing |5.2.1 |a| |ii|| | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Chain guard insecure front sprocket cover missing and considered dangerous (6.1.7 (i)) | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Rear reflector on motorcycle obscured coverd by l plate |1.4.2b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn not working electrical connection poor |7.7 |a| |ii|| | 1 |
| Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Rear Brake pedal insecure |1.1.2 |e| |i|| | 1 |
| Nearside Rear Lower Wheel spindle locking device missing split pin / cotta pin missing - replaced as necessary (5.2.1 (d)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Exhaust markings indicating not for road use or similar wording marked race (6.1.2 (c)) | 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 |
| Central Rear Upper Position lamp not working (4.2.1 (a)) | 1 |
| Central Front Upper Headlamp light intensity severely reduced head light lens full of condensation (4.1.4 (a)) | 1 |
| Central Front Upper Headlamp aim not tested (4.1.2 (b)) | 1 |
| Nearside Front Upper Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Upper Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Headlamp aim not tested due to dip beam not working (4.1.2 (b)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Shock absorber has negligible damping effect no damping due to a seized linkage or bush (5.3.2 (b)) | 1 |
| Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected split pin on castle nut (5.2.1 (c) (ii)) | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake |1.3.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Drive chain sprocket worn to excess gear box sprocket. |6.2.1e| | 1 |
| Rear Brake cylinder leaking hydraulic fluid pipe to caliper. |3.2.B1e| | 1 |
| Lower Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Brake caliper inadequately mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp not working BRAKE LOCKING UP BEFORE STOP LAMP LIGHTS UP (4.3.1 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Suspension component mounting modified so the suspension is inoperative (5.3.3 (c) (ii)) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Rear Wheel hub excessively damaged (5.2.1 (b) (i)) | 1 |
| Drive chain sprocket excessively loose |6.1.7 |c| |i|| | 1 |
| Front Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp aim projected beam image obviously incorrect LED bulb fitted (4.1.2 (c)) | 1 |
| Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |