| Most common failures | No# failures |
|---|
| Registration plate issues | 21 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Headlamp aim out of alignment | 7 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| 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 Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 2 |
| Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Shock absorber has a serious fluid leak both front fork seals (5.3.2 (b)) | 1 |
| Brake hose excessively deteriorated | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| 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 |
| Exhaust has a major leak of exhaust gases corroded and holed in two places (6.1.2 (a)) | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Central Rear Lower Position lamp not working (4.2.1 (a)) | 1 |
| Central Rear Lower Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Upper Horn not working (7.7 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Offside Front Brake disc insecure mounting bolt snapped and brake test shows fluctuation of brake performance enough to fail roller test (1.1.14 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort brakes tested individually. nearside worse than offside but both show fluctuation enough to fail roller brake test (1.2.1 (e)) | 1 |