| Most common failures | No# failures |
|---|
| Registration plate issues | 15 |
| Headlamp aim out of alignment | 11 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| 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 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake component is severely distorted |3.1.5| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Central Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake lining|s| contaminated by oil or grease |3.2.A1k| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Throttle operating incorrectly Sticks open |6.2.1f| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front or rear brake |1.3.1a| | 1 |
| Brake pedal insecure Circlip missing |3.1.2a| | 1 |
| Front Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Nearside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies brake system has no light circuit / switch |1.3.1a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Indicator switch defective |1.5.4| | 1 |
| Rear Indicator switch defective |1.5.4| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Outer Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Centre Rear Brake pedal is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake pipe excessively chafed |3.2.B2a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Suspension component pin or bush excessively worn swinging arm (5.3.4 (a) (i)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front All direction indicators obviously incorrectly positioned to close (4.4.3 (a)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Front Brake caliper inadequately mounted (1.1.16 (c) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Handlebar mounting insecure Mounting rubbers worn. (2.2.1 (a) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |