| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 24 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 14 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 12 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Horn not working |1.7.3a| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Registration plate issues | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Offside Position lamp switch insecure |1.1.4b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Horn is not a constant note |1.7.3c| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Offside Front suspension assembly component loose |2.3.1| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Brake caliper leaking and braking performance affected |1.1.16 |b| |ii|| | 1 |
| Nearside Rear Front position lamp insecure |1.1.1c| | 1 |
| Offside Rear Front position lamp insecure |1.1.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Rear Motorcycle structure cracked |6.1.1a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on side light |1.1.3a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Direction indicators not working all |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Wheel spindle or securing nut|s| so insecure that wheel security or steering control is adversely affected |5.2.1 |c| |ii|| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Registration plate lamp issues | 1 |
| Nearside Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Upper Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Lower Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Direction indicator not working all |1.5.1c| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Brake lever pivot has excessive free play (1.1.1 (b)) | 1 |
| Front position lamp incorrect colour indicators acting as position lamps showing orange |1.1.2a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Brake pipe union leaking fluid |3.2.B4| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen Mask fitted to correct right hand kick up. |1.6.B.1| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Brake hose which buldges |3.2.B4| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |