| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Rear reflector on motorcycle missing |1.4.1| | 19 |
| Registration plate issues | 10 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| 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 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front Position lamp not working (4.2.1 (a)) | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake |1.3.1a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Fuel system component leaking at pump (6.1.3 (b) (i)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Brake disc|s| cracked Front disc cracked in several places |3.2.A1g| | 1 |
| Stop lamp remains on when the brake is released rear switch |1.3.1e| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Stop lamp not working rear brake pedal (4.3.1 (a) (ii)) | 1 |
| Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Motorcycle structure has excessive corrosion which adversely affects braking or steering swinging arm corroded (6.1.1 (c) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 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 |
| All direction indicators missing Rear indicator wiring loom damaged. |4.4.1 |a| |ii|| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Brake drum|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Headlamp aim projected beam image obviously incorrect headlamp has LED bulb fitted causing poor beam pattern (4.1.2 (c)) | 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 Rear Direction indicator not working |1.5.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Horn missing |1.7.1| | 1 |
| Rear Footrest missing BOTH |6.2.12 |a|| | 1 |
| Footrest missing (6.2.12 (a)) | 1 |
| Front suspension has inadequate damping effect. front fork seals are leaking to excess |2.3.6c| | 1 |
| Front shock absorber seal failed and leaking oil front fork seals |2.3.3| | 1 |
| Lower Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Registration plate lamp issues | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Offside Front Forks in such a condition that steering control is adversely affected fork seal |2.2.2 |d| |ii|| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Stop lamp not working front switch (4.3.1 (a) (ii)) | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Front Fuel system component leaking |7.2.1a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |