| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Horn not working |1.7.3a| | 10 |
| Registration plate issues | 10 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| 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| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Registration plate lamp issues | 2 |
| Brake pedal insecure |3.1.2a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Brake hose excessively deteriorated | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Nearside Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Brake component leaking fluid |3.2.B4| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |