| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear reflector on motorcycle missing (1.4.1) | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Registration plate issues | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Horn not working |1.7.3a| | 3 |
| Registration plate lamp issues | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Offside Front Brake disc(s) friction surface contaminated by oil or grease (3.2.A1k) | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator damaged and function impaired both
|1.5.3a| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Horn not working (7.7 (a)) | 1 |
| 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 |
| Nearside Exhaust system insecure (6.1.2 (a)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Steering movement excessively notchy with the wheel raised (2.2.1b) | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Offside Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Offside Rear Direction indicator not working (1.5.1c) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 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 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Rear Rear wheel bearings have excessive free play (2.4.A.2c) | 1 |
| Steering headbearing has excessive free play (2.2.2) | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear Footrest missing Pillion Peg Missing |6.2.12 |a|| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Rear position lamp incorrect colour |1.1.2b| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |