| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 19 |
| Registration plate issues | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Registration plate lamp issues | 9 |
| 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| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Offside Throttle operating incorrectly |6.2.1f| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Headlamp aim beam image kick up to the offside Headlamp deflector fitted. |1.6| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Horn not working |1.7.3a| | 1 |
| Nearside Front Direction indicator obscured |1.5.1a| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Offside Front Direction indicator obscured |1.5.1a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Offside Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Brake linked system has a seized caliper pivot. |3.2.B5| | 1 |
| Rear Brake linked system has a seized caliper pivot. |3.2.B5| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Headlamp light source and lamp not compatible incorrect baulb |4.1.4 |c|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front position lamp incorrect colour emitting a blue light |1.1.2a| | 1 |
| Stop lamp not working front lever |4.3.1 |a| |ii|| | 1 |
| Rear Upper Exhaust has part of the system missing |7.1.1a| | 1 |
| Front Engine mounting/bracket bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Stop lamp(s) not working (4.3.1 (a) (ii)) | 1 |
| Rear Suspension component pin or bush excessively worn swingarm bushes worn to much play (5.3.4 (a) (i)) | 1 |
| Centre Front Motorcycle structure adversely modified |6.1.1b| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Shock absorber has a serious fluid leak l/h fork seal leaking |5.3.2 |b|| | 1 |
| Brake lagging in operation (1.2.1 (d)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Rear Lower Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Front Lower Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Front Lower Brake excessively binding (1.2.1 (f)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |