| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Horn not working |1.7.3a| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Registration plate issues | 3 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| 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| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Fuel tank leaking |7.2.1a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Brake pipe excessively damaged |3.2.B2a| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Brake fluid contaminated |1.8 |a|| | 1 |
| Rear Brake fluid contaminated |1.8 |a|| | 1 |
| Rear Brake caliper inadequately mounted and braking performance affected |1.1.16 |c| |ii|| | 1 |
| Rear Drive chain sprocket excessively loose |6.1.7 |c| |i|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Offside Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded lever not returning |3.2.A1h| | 1 |
| Front Brake component is excessively corroded calipers seized |3.1.5| | 1 |
| Rear Stop lamp remains on when the brake is released caused by font brake lever not returning |1.3.1e| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Upper Brake pipe union leaking fluid |3.2.B4| | 1 |
| Offside Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Rear Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Inner Fuel system component leaking |7.2.1a| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Centre Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front Upper Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |