| Most common failures | No# failures |
|---|
| Registration plate issues | 89 |
| Headlamp aim out of alignment | 65 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 44 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 32 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 24 |
| Headlamp aim beam image kick up to the offside |1.6| | 21 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 18 |
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Registration plate lamp issues | 13 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 12 |
| Front wheel bearings are excessively rough |2.3.5b| | 10 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 9 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 8 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Stop lamp remains on when the brake is released |1.3.1e| | 8 |
| 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| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Stop lamp remains on when the brakes are released | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Nearside Front Direction indicator not working |1.5.1c| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Horn not working |1.7.3a| | 5 |
| Nearside Front Direction indicators not working |1.5.1c| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Direction indicator not working |1.5.1c| | 4 |
| Rear Footrest missing |6.2.1a| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 4 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Offside Front Direction indicators not working |1.5.1c| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Brake performance not tested |3.3| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Nearside Front Direction indicator missing |1.5.1a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Direction indicator obscured |1.5.1a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Rear 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| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |