| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Registration plate lamp issues | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Registration plate issues | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicator not working THE FRONT INDICATOR STAYS LIT UP WHEN SWITCHED ON REAR N/S NOT WORKING |4.4.1 |a| |ii|| | 1 |
| Central Rear Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Central Rear Rear position lamp does not illuminate immediately when it is switched on REG PLATE LIGHT NOT WORKING |1.1.3a| | 1 |
| Central Front Headlamp at least one does not illuminate on dipped beam THERE IS NO STRAIGHT BEAM ON THE HEAD LIGHT ITS POSSIBLE THE BULB IS NOT FITTED PROPERLY OR FAULT WITH THE BULB |1.2.2a|i|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Brake disc fractured rear brake has several hairline cracks in it (1.1.14 (a) (ii)) | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen headlight beam pattern is incorrect and both elements are illuminated at the same time (4.1.2 (a)) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Front Upper Brake hose leaking reservoir pipe leaking. (1.1.12 (c)) | 1 |
| Central Rear Lower Rear reflector missing rear reflector missing (4.8.2 (a) (ii)) | 1 |