| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 45 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 34 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 26 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 22 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 18 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 12 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 10 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 10 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 9 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 8 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 8 |
| Front Brake excessively binding (1.2.1 (f)) | 7 |
| Horn not working (7.7 (a) (ii)) | 7 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 7 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 7 |
| Stop lamp not working (4.3.1 (a) (ii)) | 7 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 6 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 6 |
| Rear Brake excessively binding (1.2.1 (f)) | 6 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Registration plate issues | 6 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 6 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 6 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 5 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 5 |
| Rear Position lamp not working (4.2.1 (a)) | 5 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 4 |
| Handlebar deformed |2.1.1b| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 4 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 4 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 3 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Registration plate lamp issues | 3 |
| Offside Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Front Brake disc contaminated (1.1.14 (b)) | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 3 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Brake disc contaminated |1.1.14 |b|| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Handlebar excessively deformed |2.2.1 |c| |i|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 2 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 2 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Front Brake lever has restricted free movement (1.1.15 (e)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |