| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 13 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Horn not working |1.7.3a| | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Registration plate issues | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front 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 Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Centre Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Centre Rear Rear suspension component cracked |2.4.A.1a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Brake cylinder insecure (1.1.16 (c) (i)) | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Inner Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front position lamp incorrect colour (1.1.2a) | 1 |
| Drive chain excessively loose (6.2.1d) | 1 |
| Front Front position lamp incorrect colour (1.1.2a) | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 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 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear spring worn and seriously weakened |2.4A1b|ii|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working rear lever switch (4.3.1 (a) (ii)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Outer Front Horn is not a constant note |1.7.3c| | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Roller brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake lever excessively chafed |3.2.A1a| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |