| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 14 |
| Registration plate issues | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear reflector on motorcycle obscured |1.4.1| | 3 |
| Headlamp switch faulty |1.2.4| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside 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 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Horn not working |1.7.3a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Direction indicator incorrect colour |1.5.1b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Registration plate lamp issues | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected operating with steering (6.2.7 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Offside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Footrest insecure taped up and foot likely to slip off (6.2.12 (a)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Front Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Steering operation impeded by a fairing Front brake reservoir on handlebars impedes on fairing, resulting in left hand full lock not being achieved. |2.1.4 |e|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front shock absorber seal failed and leaking oil L/H |2.3.3| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Centre Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Direction indicator insecure L/H |1.5.3b| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Fuel cap ineffective Non accessible - unable to check rubber seal (6.1.3 (b) (i)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Exhaust silencer likely to become detached Missing completely (8.1.1 (b) (ii)) | 1 |
| Shock absorber has a serious fluid leak R/H (5.3.2 (b)) | 1 |
| Brake excessively binding Rear (1.2.1 (f)) | 1 |
| Wheel bearing has excessive play Rear (5.1.3 (a) (i)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| All direction indicators not working L/H (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Throttle operating incorrectly loose on handle bar |6.2.1f| | 1 |
| Front Headlamp missing |1.2.3a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Nearside Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Central Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Front Upper Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Nearside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Brake component is excessively corroded pads |3.1.5| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Direction indicator obscured |1.5.1a| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Offside Front Brake component leaking fluid |3.2.B4| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |