| Most common failures | No# failures |
|---|
| Registration plate issues | 36 |
| Headlamp aim out of alignment | 23 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 7 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| 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| | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake disc significantly and obviously worn Rear disc scored |1.1.14 |a| |i|| | 1 |
| Brake disc significantly and obviously worn Front disc warped |1.1.14 |a| |i|| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Exhaust markings indicating not for road use or similar wording |6.1.2 |c|| | 1 |
| Front Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Fuel pipe leaking (6.1.3 (b) (i)) | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls rear control inoperative (4.3.2 (a) (iii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Stop lamp(s) not working with foot pedal operation (4.3.1 (a) (ii)) | 1 |
| Brake pipe connection leaking on a hydraulic braking system Fluid leak from brake light pressure switch (1.1.11 (b) (ii)) | 1 |
| Service brake: efficiency below requirements |3.7.B.7| | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Position lamp not working New bulb fitted (4.2.1 (a)) | 1 |
| Nearside Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Offside Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |