| Most common failures | No# failures |
|---|
| Registration plate issues | 64 |
| Rear reflector on motorcycle missing |1.4.1| | 45 |
| Horn not working |1.7.3a| | 20 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Headlamp aim out of alignment | 14 |
| Horn missing |1.7.1| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear Wheel spoke excessively loose |4.2.1b| | 9 |
| Rear reflector missing (4.8.2 (a) (ii)) | 9 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 8 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Registration plate lamp issues | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| 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| | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Stop lamp missing |1.3.3a| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Front Direction indicator missing |1.5.1a| | 2 |
| Rear Direction indicator missing |1.5.1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Horn is not a constant note |1.7.3c| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Central Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Central Rear Upper Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Central Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Stop lamp missing |1.3.3a| | 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 |
| Headlamp missing (4.1.1 (a) (ii)) | 1 |
| Front shock absorber seal failed and leaking oil L/h and R/h seals leaking. |2.3.3| | 1 |
| Rear Shock absorber has an excessively worn bush lower bush (5.3.2 (c)) | 1 |
| Rear Headlamp reflector missing (4.1.1 (b) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Front Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Rear Upper Exhaust mounting does not fully support the exhaust system bolt loose |7.1.1.c| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Fork yoke deformed |2.1.1b| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Throttle operating incorrectly sticking |6.2.1f| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak fork seal leak (5.3.2 (b)) | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear suspension bearing has excessive free play bottom shock. |2.4.A2a|i|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Front Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Rear Wheel spoke excessively loose 3x spokes (5.2.2 (d)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Stop lamp not working Not working, either brake. (4.3.1 (a) (ii)) | 1 |
| Brake pedal pivot has excessive free play (1.1.1 (b)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Wheel more than one fixing missing wheel spacers missing |5.2.1 |a| |ii|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Rear Wheel spoke excessively loose various |4.2.1b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Headlamp missing |1.2.3a| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp aim not tested no bulb fitted (4.1.2 (b)) | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |