| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Registration plate issues | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Motorcycle structure cracked |6.1.1a| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Offside Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Engine mounting/bracket fractured R /H rear - lower engine mounting (6.1.8 (a) (ii)) | 1 |
| Shock absorber has a serious fluid leak R & L fork seals (5.3.2 (b)) | 1 |
| Front Brake disc contaminated Contaminated with fork oil (1.1.14 (b)) | 1 |
| Motorcycle structure has a fracture which is likely to adversely affect braking or steering R/H side of rear swinging arm has hole in side - rubbed through by silencer rubbing on swinging arm (6.1.1 (a) (ii)) | 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 |
| Inner Front Fuel hose leaking |7.2.1a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Upper Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Lower Brake pipe union leaking fluid |3.2.B4| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| 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 Rear Direction indicators not working |1.5.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Registration plate lamp issues | 1 |
| Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Offside Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Offside Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Front position lamp obscured more than 50% |1.1.1d| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Motorcycle structure cracked lower rear engine mounting cracked. |6.1.1a| | 1 |
| Throttle operating incorrectly sticking open |6.2.1f| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |