| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Wheel spoke excessively loose |4.2.1b| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Registration plate issues | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Wheel spoke missing |4.2.1b| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Rear brake binding | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake pedal has insufficient reserve travel Adjusted. (1.1.2 (a)) | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear reflector on motorcycle incorrectly positioned not in centre line |1.4.2d| | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake reaction bracket excessively worn s/pin missing (1.1.15 (b)) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Front Brake lever has insufficient reserve travel lever pulls back to handle bar. (1.1.2 (a)) | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 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 pivot has excessive free play (1.1.1 (b)) | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Exhaust has a major leak of exhaust gases both exhaust pipes at the clamps |6.1.2 |a|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Wheel spoke excessively bent |4.2.1b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Centre Rear Lower Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Offside Brake pedal mounting insecure |3.1.2a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Fuel pipe leaking |6.1.3 |b| |i|| | 1 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |