| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Brake lever insecure |3.1.2a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Lower Drive chain excessively loose |6.2.1d| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Brake fluid contaminated |1.8 |a|| | 1 |
| Registration plate issues | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake caliper insecure |1.1.16 |c| |i|| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Lower Drive chain excessively loose |6.2.1d| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Indicator switch inoperative for left indicators (4.4.2 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Central Rear Upper Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Central Front Upper Position lamp not working side light inoperable (4.2.1 (a)) | 1 |
| Central Front Steering headbearing has excessive wear or free play excessive play in head stock bearings (2.2.2 (f) (i)) | 1 |
| Nearside Rear Lower Drive chain excessively loose drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Front Upper Handlebar grip insecure to handlebar handbar grip loose (clutch side) (2.2.1 (d) (ii)) | 1 |
| Nearside Front Lower Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Lower Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling rear wheel over to right (2.4 (a)) | 1 |