| Most common failures | No# failures |
|---|
| Registration plate issues | 52 |
| Rear reflector on motorcycle missing |1.4.1| | 31 |
| Horn not working |1.7.3a| | 14 |
| Headlamp aim out of alignment | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 11 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 10 |
| Rear reflector missing (4.8.2 (a) (ii)) | 9 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 7 |
| Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Horn not working (7.7 (a) (ii)) | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Horn missing |1.7.1| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp aim not tested (4.1.2 (b)) | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. (3.3.A2b) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| 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| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front wheel bearings have excessive free play (2.3.5b) | 1 |
| Headlamp at least one does not illuminate on main beam (1.2.2a(ii)) | 1 |
| Direction indicator missing all (1.5.1a) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Front Upper Horn not working |1.7.3a| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front mudguard can easily contact the wheel |2.3.7| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Horn not working |1.7.3a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear suspension bush has excessive free play Excessive play is the swinging arm bearings/bushes |2.4.A2a|i|| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Stop lamp not working control 2 (4.3.1 (a) (ii)) | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Front Footrest insecure locking device missing |6.2.1a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Wheel spoke excessively bent (5.2.2 (d)) | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| Registration plate lamp issues | 1 |
| Rear Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Rear Road spring mounting insecure |5.3.1 |a| |i|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort brake not operating |3.3.A1c| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |