| Most common failures | No# failures |
|---|
| Registration plate issues | 81 |
| Rear reflector on motorcycle missing |1.4.1| | 71 |
| Headlamp aim out of alignment | 60 |
| Rear reflector missing (4.8.2 (a) (ii)) | 20 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Registration plate lamp issues | 10 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 9 |
| Rear reflector missing |4.8.2 |a| |ii|| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| 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| | 5 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Rear Footrest missing |6.2.12 |a|| | 2 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 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 Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Central Rear Upper 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 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Nearside Front Wheel excessively distorted (5.2.2 (c) (i)) | 2 |
| Exhaust has part of the system missing |7.1.1a| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |