| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 78 |
| Registration plate issues | 70 |
| Headlamp aim out of alignment | 39 |
| Registration plate lamp issues | 19 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 15 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Rear reflector missing (4.8.2 (a) (ii)) | 10 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 6 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 6 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 5 |
| Rear Footrest missing |6.2.1a| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Horn not working |1.7.3a| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Horn control not functioning. |1.7.2b| | 2 |
| 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| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front |1.3.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies Rear |1.3.1a| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Stop lamp not working front brake light switch not working |4.3.1 |a| |ii|| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Stop lamp not working not working on front brake operation (4.3.1 (a) (ii)) | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Upper Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Lower Steering lock stop maladjusted |2.1.3| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket bolts loose |6.2.1h| | 1 |
| Rear Brake pedal has inadequate reserve travel does not fully return |3.1.3b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 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 Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Front Brake performance not tested (1.2.1 (g)) | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear Brake pedal is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Direction indicator obviously incorrectly positioned too close together (4.4.3 (a)) | 1 |
| Position lamp adversely affected by the operation of another lamp indicators (4.2.3 (b)) | 1 |
| Central Front Horn not working (7.7 (a)) | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies Front and rear brakkes |1.3.1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Brake pedal has insufficient reserve travel lever fouls fairing at full travel (1.1.2 (a)) | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Upper Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 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 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |