| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 20 |
| Registration plate issues | 16 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Steering headbearing has excessive free play |2.2.2| | 12 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| 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| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Road spring so insecure that control of the motorcycle is likely to be adversely affected (5.3.1 (a) (ii)) | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Brake hose damaged | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Front Throttle operating incorrectly Very sticky movement |6.2.1f| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Throttle operating incorrectly sticking |6.2.1f| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Lower Motorcycle structure joining/attachment plate or fastening insecure mudguard insecure offside fixing bolt falling out |6.1.1 |b| |i|| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Registration plate lamp issues | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Headlamp aim headlamp damaged and function impaired bulb fitted incorrectly |1.2.3a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Central Rear Stop lamp remains on when the brake is released freed up sticking rear brake |1.3.1e| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Offside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 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 |
| Headlamp incorrect colour |4.1.4 |a|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies Fixed broken wire |1.3.1a| | 1 |
| Rear Brake disc insecure |1.1.14 |a| |ii|| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Rear Stop lamp not working brake switch not working stop light |4.3.1 |a| |ii|| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Fuel pipe leaking excessively or a risk of fire |6.1.3 |b| |ii|| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Suspension component attachment bracket/mounting likely to fail (5.3.3 (b) (ii)) | 1 |
| Rear Suspension component likely to fail (5.3.3 (b) (ii)) | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |