| Most common failures | No# failures |
|---|
| Registration plate issues | 53 |
| Headlamp aim out of alignment | 45 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Horn not working |1.7.3a| | 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 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Riders seat insecure |6.2.1a| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 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 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Headlamp insecure |1.2.3b| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Front Drive belt sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive belt sprocket worn to excess |6.2.1e| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Rear Upper Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Upper Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Rear Lower Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Vehicle identification number not permanently displayed |6.3.5a| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Vehicle identification number not legible cleaned off |0.2 |b|| | 1 |
| Rear All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake rod excessively damaged |3.2.A1c| | 1 |
| Brake linkage excessively damaged |3.2.A1c| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Drive belt excessively loose. |6.2.1d| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Centre Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear 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 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Rear reflector on motorcycle missing (1.4.1) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Nearside Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Offside Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |