| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 119 |
| Registration plate issues | 43 |
| Registration plate lamp issues | 37 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 35 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 30 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 19 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 19 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 18 |
| Horn not working |1.7.3a| | 18 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 15 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 15 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 14 |
| Drive chain excessively loose |6.2.1d| | 13 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 13 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 12 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 10 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Drive chain excessively tight |6.2.1d| | 8 |
| Drive chain worn to excess |6.2.1e| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 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| | 5 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Front Position lamp not working (4.2.1 (a)) | 5 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Offside Front Direction indicators not working |1.5.1c| | 4 |
| Horn sound not in accordance with requirements (7.7 (c)) | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Front Brake disc|s| cracked |3.2.A1g| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Horn sounds harsh or grating |1.7.3c| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Direction indicators flashing more than 120 times per minute all |1.5.1c| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Brake hose excessively deteriorated | 2 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Nearside Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Offside Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Horn is not a constant note |1.7.3c| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Stop lamp not working front control (4.3.1 (a) (ii)) | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 2 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Nearside Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 2 |
| Central Rear Position lamp not working (4.2.1 (a)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |