| Most common failures | No# failures |
|---|
| Registration plate issues | 53 |
| Headlamp aim out of alignment | 34 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| 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| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Horn not working |1.7.3a| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 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|| | 1 |
| Central Rear Upper Stop lamp not working rear brake light not working when brake pedal is pressed - front brake light is fine. (4.3.1 (a) (ii)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn Warped (1.1.14 (a) (i)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp light intensity significantly reduced (4.3.3 (a) (ii)) | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Rear Front position lamp incorrect colour |1.1.2a| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Brake disc|s| insecure |3.2.A1g| | 1 |
| Brake performance not tested not tested due to the rear brake disc being insecure |3.3| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Brake hose excessively stretched (1.1.12 (b) (ii)) | 1 |