| Most common failures | No# failures |
|---|
| Registration plate issues | 40 |
| Headlamp aim out of alignment | 17 |
| 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| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Wheel spoke cracked. |4.2.1b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Drive belt fouling another component |6.2.1d| | 1 |
| Front Brake caliper inadequately mounted caliper bolt lower at fault (1.1.16 (c) (i)) | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Direction indicator affected by the operation of another lamp both front |1.5.1c| | 1 |
| Wheel spoke excessively loose Several spokes in rear wheel |4.2.1b| | 1 |
| Rear Wheel fixing missing (single fixing) split pin missing on wheel spindle (5.2.1 (a) (ii)) | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside 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 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Horn missing |1.7.1| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Rear Upper Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Rear Lower Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working staying on |4.4.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working staying on |4.4.1 |a| |ii|| | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Rear Wheel spindle or securing nut|s| so insecure that wheel security or steering control is adversely affected |5.2.1 |c| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Chain guard fouling another component |6.2.1c| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Drive belt worn to excess |6.2.1e| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Brake pedal is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Central Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride spit pin missing on rear wheel |6.2.1h| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |