| Most common failures | No# failures |
|---|
| Registration plate issues | 37 |
| Headlamp aim out of alignment | 29 |
| Rear reflector on motorcycle missing |1.4.1| | 15 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 11 |
| 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| | 9 |
| Horn not working |1.7.3a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| 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| | 3 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 1 |
| Headlamp at least one does not illuminate on main beam (1.2.2a(ii)) | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Brake performance not tested no braking material on rear pads |1.2.1 |g|| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Horn replaced by a siren |1.7.3b| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Central Front Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 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 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Exhaust markings indicating not for road use or similar wording |6.1.2 |c|| | 1 |
| Front Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Offside Front Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Direction indicator obviously incorrectly positioned Spacing less than 240 mm (4.4.3 (a)) | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies Off either controls |1.3.1a| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Drive belt guard insecure |6.2.1c| | 1 |
| Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Offside Front Upper Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Brake hose excessively deteriorated | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Rear Footrest insecure stiff (6.2.12 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Outer Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Outer Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |