| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 128 |
| Registration plate issues | 121 |
| Rear reflector on motorcycle missing |1.4.1| | 30 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 26 |
| Horn not working |1.7.3a| | 24 |
| 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| | 22 |
| Rear reflector missing (4.8.2 (a) (ii)) | 21 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Throttle operating incorrectly |6.2.1f| | 10 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 10 |
| Headlamp aim beam image kick up to the offside |1.6| | 10 |
| Stop lamp remains on when the brakes are released | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear reflector missing |4.8.2 |a| |ii|| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 7 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 7 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 7 |
| Stop lamp remains on when the brake is released |1.3.1e| | 7 |
| Horn not working (7.7 (a)) | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Riders seat insecure |6.2.1a| | 6 |
| Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Direction indicators not working |1.5.1c| | 5 |
| Offside Front Footrest insecure |6.2.1a| | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| 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|| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 3 |
| Registration plate lamp issues | 3 |
| All direction indicators missing (4.4.1 (a) (ii)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| 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)) | 3 |
| Riders seat insecure (6.2.5 (a) (ii)) | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Front Upper Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear position lamp damaged and function impaired |1.1.1b| | 2 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 2 |
| Rear 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| | 2 |
| Front Direction indicator missing |1.5.1a| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 2 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Front Riders seat insecure |6.2.1a| | 2 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |