| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 67 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 28 |
| Steering headbearing has excessive free play |2.2.2| | 27 |
| Registration plate issues | 23 |
| Horn not working |1.7.3a| | 22 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 18 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 16 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 11 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 11 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 11 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 10 |
| Handlebar mounting clamp loose |2.1.1a| | 10 |
| Indicator switch defective |1.5.4| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 9 |
| Fuel cap sealing washer torn |7.2.2c| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Exhaust excessively deteriorated |7.1.1a| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Rear Position lamp not working (4.2.1 (a)) | 7 |
| Nearside Rear Direction indicators not working |1.5.1c| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Steering linkage has excessive free play |2.2.2| | 6 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 6 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Headlamp insecure |1.2.3b| | 5 |
| Offside Steering lock stop ineffective |2.1.3| | 5 |
| Nearside Steering lock stop ineffective |2.1.3| | 5 |
| Horn not working |7.7 |a| |ii|| | 5 |
| Front Position lamp not working (4.2.1 (a)) | 5 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| All direction indicators not working (4.4.1 (a) (ii)) | 5 |
| Direction indicators not working |1.5.1c| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 4 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Headlamp aim not tested (4.1.2 (b)) | 4 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 4 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Offside Indicator switch defective |1.5.4| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 3 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 3 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Handlebar retaining device loose |2.2.1 |b| |i|| | 2 |
| Front Horn not working |7.7 |a| |ii|| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Steering lock stop maladjusted |2.1.3| | 2 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 2 |
| Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 2 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Nearside Brake lever mounting insecure |3.1.2a| | 2 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Front Headlamp light intensity severely reduced (4.1.4 (a)) | 2 |
| Registration plate lamp issues | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Position lamp not working (4.2.1 (a)) | 2 |
| Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Rear Brake grabbing severely (1.2.1 (c)) | 2 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 2 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 2 |