| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 17 |
| Registration plate issues | 17 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Headlamp aim out of alignment | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn missing |1.7.1| | 2 |
| Horn not working |1.7.3a| | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 2 |
| Offside Rear Direction indicator missing |1.5.1a| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Vehicle identification number not legible |6.3.5a| | 1 |
| Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| 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| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |