| Most common failures | No# failures |
|---|
| Registration plate issues | 44 |
| Headlamp aim out of alignment | 36 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| 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| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Registration plate lamp issues | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Offside Upper Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Lower Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Rear Lower 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 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Handlebar handgrip missing |2.1.1c| | 1 |
| Brake pipe excessively corroded | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Lower Fork yoke fractured |2.1.1b| | 1 |
| Offside Front Lower Fork yoke fractured |2.1.1b| | 1 |
| Rear Drive belt sprocket worn to excess |6.2.1e| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Centre Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Valve stem seriously damaged Front valve leaking |5.2.3 |j|| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Drive belt excessively loose. |6.2.1d| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |