| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 26 |
| Rear reflector missing (4.8.2 (a) (ii)) | 16 |
| Registration plate lamp issues | 15 |
| Registration plate issues | 15 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Front Wheel spindle loose |5.2.1 |c| |i|| | 2 |
| Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 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 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (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 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 2 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 2 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 1 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (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 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Valve stem seriously damaged splitting (5.2.3 (j)) | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Central Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Throttle operating incorrectly sticking |6.2.1f| | 1 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Wheel bearing has excessive play And rough. |5.1.3 |a| |i|| | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Valve stem seriously damaged major cracks in front valve stem |5.2.3 |j|| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Offside Rear 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 |
| Direction indicators flashing more than 120 times per minute both front |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Brake pedal mounting cracked . |3.1.2c| | 1 |
| Front Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Offside Front Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Front Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Front Position lamp not working |4.2.1 |a|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Rear Wheel spindle or securing nut|s| so insecure that wheel security or steering control is adversely affected |5.2.1 |c| |ii|| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear suspension bush has excessive free play top shock mount |2.4.A2a|i|| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicator incorrect colour left hand front |1.5.1b| | 1 |
| Direction indicator incorrect colour right hand front |1.5.1b| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear |1.3.1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars right side |2.1.2b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Headlamp reflector missing (4.1.1 (b) (ii)) | 1 |
| Front wheel spindle securing nut|s| loose Repaired |2.3.5a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear position lamp incorrect colour Shows blue light |1.1.2b| | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Exhaust is leaking and excessively noisey Exhaust is excessively noisey and not UK road legal |7.1.1b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Stop lamp not working brake (4.3.1 (a) (ii)) | 1 |
| Rear Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Front Wheel excessively damaged (5.2.2 (c) (i)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Nearside Rear Outer Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride any locking device not correctly fitted e.g. the
horseshoe device on a drive chain fitted with
the open end in the direction of rotation. |6.2.1h| | 1 |
| Nearside Front shock absorber seal failed and leaking oil and offside |2.3.3| | 1 |
| Offside Footrest insecure affecting rear brake lever |6.2.1a| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Lower Motorcycle structure is so deformed it is likely to adversely affect braking or steering rear brake pedal - bent - catching engine casing - have bent back to correct - structurally strong (6.1.1 (a) (ii)) | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp affected by indicator |1.1.3b| | 1 |
| Stop lamp affected by the operation of another lamp affected by indicator |1.3.2| | 1 |
| Stop lamp does not emit a steady light flickers with front brake |1.3.1b| | 1 |
| Stop lamp does not emit a steady light flickers with rear brake |1.3.1b| | 1 |
| Offside Front Footrest insecure hanger |6.2.1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Shock absorber has a serious fluid leak Front forks Leaking |5.3.2 |b|| | 1 |
| Throttle operating incorrectly STICKING OPEN |6.2.1f| | 1 |
| Throttle operating incorrectly sticking. |6.2.1f| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Rear Footrest insecure pillion |6.2.12 |a|| | 1 |
| Front Horn missing |1.7.1| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Centre Rear Upper Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |