| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 35 |
| Registration plate issues | 32 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 13 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Nearside Rear Footrest missing |6.2.1a| | 7 |
| Offside Rear Footrest missing |6.2.1a| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Registration plate lamp issues | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Footrest missing |6.2.1a| | 3 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Horn not working |1.7.3a| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front 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 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Steering lock stop maladjusted |2.1.3| | 2 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Centre Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Direction indicator not working |1.5.1c| | 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 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Steering damper in such a condition that the steering action is adversely affected damper incorrectly adjusted reducing r/h lock (2.1.4 (d) (ii)) | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Front All position lamps not working (4.2.1 (a)) | 1 |
| Offside Front All position lamps not working (4.2.1 (a)) | 1 |
| Nearside Rear All position lamps not working (4.2.1 (a)) | 1 |
| Offside Rear All position lamps not working (4.2.1 (a)) | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Steering lock stop ineffective |2.1.3| | 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 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 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 |
| 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 Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Fuel cap mounting flange/sealing method defective cant open |7.2.2c| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Brake pedal is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Horn control defective (1.7.2a) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Stop lamp not working front brake |4.3.1 |a| |ii|| | 1 |