| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 11 |
| Offside Front Direction indicator insecure |1.5.3b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front Brake master cylinder has an excessively worn master cylinder pivot. |3.2.B5| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front Stop lamp switch with a delay in operation front switch (4.3.2 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Rear Brake lever is bent and the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Exhaust is leaking and excessively noisey at front |7.1.1b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake grabbing severely |1.2.1 |c|| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Upper Brake component leaking fluid |3.2.B4| | 1 |
| Offside Front Brake lever insecure |3.1.2a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |