| Most common failures | No# failures |
|---|
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Drive chain excessively loose |6.2.1d| | 16 |
| Headlamp aim out of alignment | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Headlamp insecure |1.2.3b| | 8 |
| Registration plate issues | 7 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Registration plate lamp issues | 4 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Front mudguard insecure |2.3.7| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Footrest missing |6.2.12 |a|| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Horn not working |1.7.3a| | 2 |
| Headlamp insecure |4.1.1 |c|| | 2 |
| Front Headlamp insecure (4.1.1 (c)) | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Wheel spoke missing (5.2.2 (d)) | 1 |
| Rear Wheel spoke excessively bent (5.2.2 (d)) | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front shock absorber seal failed and leaking oil leaking onto front brake |2.3.3| | 1 |
| Central Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Central Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Central Rear Footrest missing |6.2.12 |a|| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Brake rod excessively worn threads worn (1.1.15 (b)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Plate brake test No brake control achieves an efficiency of 30%. |3.3.B2a| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| All direction indicators adversely affected by the operation of another lamp |4.4.3 |b|| | 1 |
| Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Brake drum|s| insecure |3.2.A1g| | 1 |
| Horn control not readily accesible. |1.7.2a| | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Wheel spoke missing |5.2.2 |d|| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear shock absorber has inadequate damping effect. bothsides |2.4.A.3b| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies stop switch |1.3.1a| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on side light |1.1.3a| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Wheel fixing loose (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Drive chain worn to excess excess tight parts , sprockets not visible etc (6.1.7 (c) (i)) | 1 |
| Rear Brake component inadequately mounted operating arm (1.1.21 (c)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front brake switch (4.3.2 (a) (iii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Stop lamp not working control 2 (4.3.1 (a) (ii)) | 1 |
| Stop lamp showing white light to the rear |4.3.3 |a| |ii|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Front Brake lever excessively chafed |3.2.A1a| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Rear shock absorber seal failed and leaking oil BOTH REAR SHOCKS ARE LEAKING OIL |2.4.A.1c| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Stop lamp insecure |1.3.3b| | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Offside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Rear Suspension attachment bracket/mounting insecure Lower mounting nut very loose (5.3.3 (a) (i)) | 1 |
| Rear Brake component is excessively corroded sticking on |3.1.5| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |