| Most common failures | No# failures |
|---|
| Registration plate issues | 18 |
| Headlamp aim out of alignment | 12 |
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 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| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Horn not working |1.7.3a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| 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| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Offside 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 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside 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 Direction indicator incorrect colour |1.5.1b| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| rear brake recording little or no effort |3.7.B.5a| | 1 |
| Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.B.7| | 1 |
| Nearside Stop lamp not working |1.2.1b| | 1 |
| Brake pedal has insufficient reserve movement |3.3.A.5| | 1 |
| Stop lamp not working |1.2.1b| | 1 |
| Brake hose damaged | 1 |
| Rear Brake hose leaking |3.6.A.1| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Centre Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Upper Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Drive belt so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake pipe excessively corroded | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Headlamp insecure |4.1.1 |c|| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |