| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Registration plate issues | 4 |
| Horn not working |1.7.3a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 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| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Horn control defective |1.7.2a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Registration plate lamp issues | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Stop lamp not working When front lever operated (4.3.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal leaking (5.3.2 (b)) | 1 |
| Nearside Front Brake disc contaminated contaminated with oil from leak on forks (1.1.14 (b)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling rear wheel is set too far over to the right (2.4 (a)) | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Upper Front suspension assembly component missing |2.3.1| | 1 |
| Nearside Front Upper Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Throttle operating incorrectly adjusted throttle cables correctly |6.2.7 |a| |i|| | 1 |
| Nearside Front Direction indicators not working (1.5.1c) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Headlamp not working on main beam stuck on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Rear mono-shock insecure |2.4.B.4| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Brake fluid contaminated (1.8 (a)) | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Offside Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake component leaking fluid |3.2.B4| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |