| Most common failures | No# failures |
|---|
| Registration plate issues | 30 |
| Rear reflector on motorcycle missing |1.4.1| | 21 |
| Headlamp aim out of alignment | 19 |
| Horn not working |1.7.3a| | 8 |
| Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Fuel system component leaking |7.2.1a| | 3 |
| Rear Wheel spoke excessively loose |5.2.2 |d|| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear Direction indicator missing |1.5.1a| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Stop lamp not working Both controls |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Direction indicators not working missing |1.5.1c| | 1 |
| Rear Direction indicators not working missing |1.5.1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Stop lamp not working control 2 (4.3.1 (a) (ii)) | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear All direction indicators missing both sides (4.4.1 (a) (ii)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Brake performance not tested |3.3| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Horn missing |1.7.1| | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |