| Most common failures | No# failures |
|---|
| Registration plate issues | 22 |
| Headlamp aim out of alignment | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Horn not working |1.7.3a| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| 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| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear 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 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| 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)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Headlamp aim not tested |4.1.2 |b|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Stop lamp not working from second control |1.2.1b| | 1 |
| Front Brake lever has inadequate reserve travel |9.3.1f| | 1 |
| Parking brake efficiency below requirements |3.7.B.7| | 1 |
| Rear Trikes, quads or pre-68 vehicles, service brake efficiency below requirements |3.7.B.7| | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Front Brake pedal spongy |3.3.B.1b| | 1 |
| Nearside Stop lamp not working |1.2.1b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Stop lamp not working Switch on pedal re-attatched. |1.2.1b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Offside Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Brake hose excessively deteriorated | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Horn not working |1.6.2a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Horn missing |1.7.1| | 1 |
| Rear Direction indicator adversely affected by the operation of another lamp |4.4.3 |b|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Horn replaced by a siren |1.7.3b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake rod insecure (1.1.15 (c)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Throttle operating incorrectly sticking (6.2.7 (a) (i)) | 1 |
| Fuel system component leaking carb leaking (6.1.3 (b) (i)) | 1 |
| Riders seat missing (6.2.5 (a) (ii)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Nearside Shock absorber likely to become detached (5.3.2 (a) (ii)) | 1 |
| Offside Shock absorber likely to become detached (5.3.2 (a) (ii)) | 1 |
| Nearside Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Offside Shock absorber has an excessively worn bush (5.3.2 (c)) | 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 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |