| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 60 |
| Steering headbearing has excessive free play |2.2.2| | 14 |
| Stop lamp remains on when the brakes are released | 13 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 12 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 11 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 9 |
| Registration plate issues | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 8 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 8 |
| Nearside Rear Direction indicators not working |1.5.1c| | 8 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 7 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 6 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 6 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 6 |
| Rear Position lamp not working |4.2.1 |a|| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 5 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Handlebar mounting clamp loose |2.1.1a| | 5 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 5 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 4 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 4 |
| Rear Brake lever insecure (1.1.2 (e) (i)) | 4 |
| Front Position lamp not working |4.2.1 |a|| | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| All direction indicators not working |4.4.1 |a| |ii|| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 3 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Headlamp aim not tested |4.1.2 |b|| | 3 |
| Headlamp insecure |4.1.1 |c|| | 3 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 3 |
| Riders seat insecure (6.2.5 (a) (ii)) | 3 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| 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| | 3 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 3 |
| Horn not working |1.7.3a| | 3 |
| Headlamp aim not tested (4.1.2 (b)) | 3 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Riders seat insecure |6.2.5 |a| |ii|| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 2 |
| All position lamps not working |4.2.1 |a|| | 2 |
| Exhaust system insecure (6.1.2 (a)) | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Rear Position lamp likely to become detached |4.2.1 |c| |ii|| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Front Headlamp aim not tested |1.6| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Front Headlamp aim not tested headlamp not working at all (4.1.2 (b)) | 2 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Horn control not functioning. |1.7.2b| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| All direction indicators incorrect colour |4.4.3 |a|| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 2 |
| Registration plate lamp issues | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |