| Most common failures | No# failures |
|---|
| Registration plate issues | 40 |
| Headlamp aim out of alignment | 26 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 8 |
| Horn not working |1.7.3a| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 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 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Offside Upper Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Offside Lower Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Exhaust has a major leak of exhaust gases Silencer has detached from balance pipe (6.1.2 (a)) | 1 |
| Headlamp aim projected beam image obviously incorrect Spot lamp has rotated by 90?? beam pattern too high (4.1.2 (c)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Front Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Fuel pipe union leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Front Brake disc significantly and obviously worn Brake disc warped (1.1.14 (a) (i)) | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside 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 |
| Nearside Front 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 |
| Nearside 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| | 1 |
| Rear Wheel spoke excessively loose broken (5.2.2 (d)) | 1 |
| Nearside Rear Footrest insecure |6.2.12 |a|| | 1 |
| Brake pipe excessively corroded | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Handlebar retaining device loose Lower riser bolts loose (2.2.1 (b) (i)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Nearside Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Position lamp not working rear light (4.2.1 (a)) | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake disc significantly and obviously worn Seriously warped |1.1.14 |a| |i|| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies Brake light does not work with front or rear brake. |1.3.1a| | 1 |
| Brake excessively binding Rear brake |1.2.1 |f|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Drive belt excessively loose |6.1.7 |c| |i|| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Horn control not functioning. |1.7.2b| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |