| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 75 |
| Horn not working |1.7.3a| | 43 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 31 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 30 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 26 |
| Drive chain excessively loose |6.2.1d| | 22 |
| Registration plate issues | 19 |
| Front wheel bearings have excessive free play |2.3.5b| | 17 |
| Headlamp aim beam image kick up to the offside |1.6| | 16 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Rear Brake excessively binding (1.2.1 (f)) | 13 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 12 |
| Drive chain excessively tight |6.2.1d| | 10 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Drive chain worn to excess |6.2.1e| | 10 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Rear position lamp insecure |1.1.1c| | 8 |
| Front Brake excessively binding (1.2.1 (f)) | 8 |
| Horn not working (7.7 (a)) | 8 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 7 |
| Throttle operating incorrectly |6.2.1f| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 7 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Handlebar deformed |2.1.1b| | 5 |
| Front Horn not working |1.7.3a| | 5 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Offside Front Direction indicators not working |1.5.1c| | 4 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 4 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 3 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Front Brake disc|s| cracked |3.2.A1g| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Riders seat insecure (6.2.5 (a) (ii)) | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear Brake pedal insecure |3.1.2a| | 2 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Brake pedal insecure |3.1.2a| | 2 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear suspension component cracked |2.4.A.1a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 2 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Steering lock stop ineffective |2.1.3| | 2 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Brake pedal mounting insecure |3.1.2a| | 2 |
| Offside Footrest missing |6.2.1a| | 2 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Rear Brake pedal attachment screws loose |3.1.2b| | 2 |
| Centre Front Horn not working |1.7.3a| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Offside Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Fairing so located that it is likely to impede the steering |2.1.2e| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Front Horn not working (7.7 (a) (ii)) | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 2 |
| Nearside Front Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |