| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 3 |
| Registration plate issues | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp adversely affected by the operation of another lamp Affected by indicators |4.3.3 |b|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Horn not working |1.7.3a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Offside Rear Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect beam image kickoff off to right (4.1.2 (c)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |