| Most common failures | No# failures |
|---|
| Registration plate issues | 11 |
| Headlamp aim out of alignment | 4 |
| Stop lamp remains on when the brakes are released | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Throttle operating incorrectly sticking lubricated freed off cables outers cracked |6.2.1f| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Brake master cylinder leaking cap damaged |1.1.10 |b| |ii|| | 1 |
| Horn control not readily accesible. |1.7.2a| | 1 |
| Horn not working |1.7.3a| | 1 |
| Drive belt so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Stop lamp not working Rear switch (4.3.1 (a) (ii)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Stop lamp not working Front brake control (4.3.1 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 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 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |