| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Registration plate issues | 14 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Horn not working |1.7.3a| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Horn control defective |1.7.2a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 2 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Rear Brake pedal has inadequate reserve travel foot brake hits floor |3.1.3b| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Front wheel bearings are excessively rough excessive play |2.3.5b| | 1 |
| Rear wheel spindle securing nut locking device missing stud broken |2.4.A.2b| | 1 |
| Rear Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Nearside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Plate brake test No brake control achieves an efficiency of 30%. |3.3.B2a| | 1 |
| Plate brake test Neither brake control achieves an efficiency of 25% |3.3.B2b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Nearside Front Front suspension assembly component loose |2.3.1| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Exhaust silencer insecure |8.1.1 |b| |i|| | 1 |
| Offside Rear Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Riders seat missing |6.2.1a| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Wheel spindle or securing nut|s| so insecure that wheel security or steering control is adversely affected |5.2.1 |c| |ii|| | 1 |
| Brake hose excessively deteriorated | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake lever mounting cracked |3.1.2c| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake drum|s| insecure |3.2.A1g| | 1 |
| Front Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Stop lamp not working when operating rear brake |4.3.1 |a| |ii|| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn not working (1.7.3a) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Shock absorber has an excessively worn bush both sides top bushes (5.3.2 (c)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Wheel spindle locking device missing (5.2.1 (d)) | 1 |