| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 8 |
| Front Position lamp not working (4.2.1 (a)) | 4 |
| Stop lamp remains on when the brakes are released | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Brake pedal has insufficient reserve travel lever bent towards bar (1.1.2 (a)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected sticking down due to worn shoes (1.1.2 (b) (ii)) | 1 |
| Rear Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Steering operation linkage fouling when handlebars turned from lock to lock |2.1.4 |a|| | 1 |
| Front Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Nearside Front Wheel excessively distorted |5.2.2 |c| |i|| | 1 |
| Rear Suspension arm pin or bush excessively worn swinging arm bushes / bearings (5.3.4 (a) (i)) | 1 |
| Headlamp light intensity severely reduced dip+ high beam (4.1.4 (a)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure Torque-Arm (6.1.1 (b) (i)) | 1 |
| Offside Front Direction indicator missing (1.5.1a) | 1 |
| Centre Front Wheel alignment incorrect which adversely affects the handling (2.5.1) | 1 |
| Headlamp aim not tested headlamp loose |1.6| | 1 |
| Rear position lamp insecure lens insecure |1.1.1c| | 1 |
| Steering movement excessively stiff with the wheel raised around full lock |2.2.1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised around centred position |2.2.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear torque arm locking device missing |6.2.1h| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket to carrier securing nuts loose |6.2.1h| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel adjusted on test (1.1.2 (a)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Registration plate lamp issues | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake rod insecure rear drum brake securing bar loose (1.1.15 (c)) | 1 |
| Rear Suspension arm pin or bush excessively worn rear swinging arm pivot has excessive side to side movement (5.3.4 (a) (i)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Rear Footrest insecure split pin missing (6.2.12 (a)) | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |