| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 25 |
| Headlamp aim beam image kick up to the offside |1.6| | 18 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 13 |
| Registration plate issues | 11 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| 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 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Offside Footrest insecure |6.2.1a| | 2 |
| Registration plate lamp issues | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| All direction indicators light intensity significantly reduced (4.4.3 (a)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Drive chain excessively loose (6.2.1d) | 1 |
| Horn not working (1.7.3a) | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Horn missing |1.7.1| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 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 Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Brake component insecure brake fluid resivior insicure |1.1.21 |c|| | 1 |
| Nearside Front Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Offside Front Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Brake lever excessively damaged |3.2.A1c| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 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 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Drive chain excessively tight (6.2.1d) | 1 |
| Direction indicators flashing more than 120 times per minute (1.5.1c) | 1 |
| Nearside Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Lower Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Brake pedal anti-slip provision missing (1.1.2 (c)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Valve stem seriously damaged Front wheel rubber valve stem splitting (5.2.3 (j)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Front Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Drive chain worn to excess seized links |6.2.1e| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Rear reflector missing (4.8.2 (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 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Nearside Rear Lower Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |