| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Rear reflector on motorcycle missing |1.4.1| | 18 |
| Registration plate issues | 11 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Offside Rear Brake hose fouling |3.2.B3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Front Steering lock stop missing |2.1.3| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear mono-shock insecure lower pivot bolt loose |2.4.B.4| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| An item not tested |Manual| | 1 |
| Horn missing |1.7.1| | 1 |
| Rear Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake lagging in operation |1.2.1 |d|| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 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 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Front mudguard can easily contact the wheel |2.3.7| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Rear brake switch faulty - repaired (4.3.2 (a) (iii)) | 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 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Inner Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Front Brake hose fouling |3.2.B3b| | 1 |
| Offside Front Brake hose fouling |3.2.B3b| | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Exhaust mounting missing |7.1.1c| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake hose connection leaking (1.1.12 (c)) | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |