| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Registration plate issues | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Lower Rear suspension component loose |2.4.A.1a| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Horn not working |1.7.3a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Fuel cap ineffective Rubber gasket missing |6.1.3 |b| |i|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Offside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Headlamp insecure |1.2.3b| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Headlamp aim beam image too far to the left |1.6.4| | 1 |
| Offside Headlamp aim beam image too far to the left |1.6.4| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 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 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Front Brake component is severely distorted |3.1.5| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |