| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Registration plate lamp issues | 6 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Registration plate issues | 4 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Offside Exhaust has part of the system missing |7.1.1a| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Exhaust system insecure (6.1.2 (a)) | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside 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| | 1 |
| Offside 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| | 1 |
| Rear Stop lamp not working Brake light not working when front brake applied (4.3.1 (a) (ii)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Suspension rod modified so the suspension is inoperative (5.3.3 (c) (ii)) | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Position lamp not working |4.2.1 |a|| | 1 |
| Front Brake excessively binding unable to check wheel bearings due to excessive brake binding (1.2.1 (f)) | 1 |
| Brake performance not tested due to front brake excessively bindng (1.2.1 (g)) | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Nearside Front Clutch lever positioned so it cannot be readily operated fluid level empty (6.2.7 (b)) | 1 |
| Clutch lever positioned so it cannot be readily operated (6.2.7 (b)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Rear Lower Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Nearside Front Brake locking device missing |3.2.A1e| | 1 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Nearside Exhaust has part of the system missing |7.1.1a| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Central Rear Lower Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Footrest missing Rear |6.2.12 |a|| | 1 |
| Rear Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Throttle operating incorrectly sticking when lock to the left |6.2.1f| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Front Upper Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride fork yolk retaining bolt loose |6.2.1h| | 1 |
| Offside Front Upper Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride fork yolk retaining bolt loose |6.2.1h| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Direction indicator obscured |1.5.1a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Footrest insecure damaged (6.2.12 (a)) | 1 |