| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 28 |
| Registration plate issues | 23 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Throttle operating incorrectly |6.2.1f| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Drive chain excessively loose |6.2.1d| | 7 |
| 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| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Registration plate lamp issues | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| 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)) | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Offside Front Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Brake pivot has restricted free movement rear brake arm not returning (1.1.15 (e)) | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen left hand headlamp fitted (4.1.2 (a)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected lock to lock engine revs high on a lock (6.2.7 (a) (ii)) | 1 |
| Offside Rear Rear wheel bearing has excessive play |2.6.2| | 1 |
| Brakes imbalanced across an axle | 1 |
| Headlamp aim projected beam image is obviously incorrect Beam kickup to the right (4.1.2 (c)) | 1 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Motorcycle structure excessively damaged (6.1.1a) | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Direction indicators not working rear left not operating |1.5.1c| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Handlebar mounting insecure TIGHTENED DURING TEST |2.2.1 |a| |i|| | 1 |
| Rear Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Front Forks in such a condition that steering control is adversely affected HORN FOULING FRONT MUDGUARD ON SUSPENSION COMPRESSION |2.2.2 |d| |ii|| | 1 |
| Front Brake caliper leaking |1.1.16 |b| |i|| | 1 |
| Rear Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Motorcycle structure adversely modified |6.1.1b| | 1 |
| Front Horn control defective |1.7.2a| | 1 |
| Centre Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working front and rear (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Front Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort rear disc warpped |1.2.1 |e|| | 1 |
| Throttle operating incorrectly holding open on full lock right |6.2.1f| | 1 |
| Front suspension assembly component missing mudgaurd/streghtening brace |2.3.1| | 1 |
| Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Stop lamp not working Front brake (4.3.1 (a) (ii)) | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Lower Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Stop lamp not working loose connection at switch |4.3.1 |a| |ii|| | 1 |
| Throttle operating incorrectly throttle sticking /grip loose |6.2.1f| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering indicators fouling steering |2.1.2a| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Offside Rear Suspension component attachment bracket/mounting corroded and seriously weakened frame |5.3.3 |b| |i|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 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 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Offside Headlamp switch insecure |1.2.4| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Brake master cylinder insecure (1.1.10 (c)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Brake cable badly frayed |3.2.A1b| | 1 |
| Hazard warning lamps inoperative (4.4.1 (e)) | 1 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 1 |
| Parking brake lever inoperative (1.1.6 (d)) | 1 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Central Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Horn not working (7.7 (a)) | 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 |