| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 106 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 39 |
| Registration plate issues | 37 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 30 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 24 |
| Horn not working |1.7.3a| | 23 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 20 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 20 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 18 |
| Registration plate lamp issues | 18 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 15 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 14 |
| Drive chain excessively loose |6.2.1d| | 14 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 11 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 10 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| 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 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 6 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Fuel system component leaking |7.2.1a| | 5 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Fuel system component insecure |7.2.1b| | 2 |
| Sidecar wheel alignment has excessive toe-in |5.3.1b| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Centre Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |