| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Registration plate issues | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Registration plate lamp issues | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Handlebar deformed to the extent that steering is affected handlebars bent on right hand side |2.2.1 |c| |ii|| | 1 |
| Front Forks in such a condition that steering control is adversely affected forks out of alignment |2.2.2 |d| |ii|| | 1 |
| Exhaust has a major leak of exhaust gases exhaust blowing at head gasket |6.1.2 |a|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Position lamp missing (4.2.1 (a)) | 1 |
| Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Inner Rear Lower Brake component is severely distorted |3.1.5| | 1 |
| Inner Front Upper Headlamp insecure |1.2.3b| | 1 |
| Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front Shock absorber has negligible damping effect front forks not damping (5.3.2 (b)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen has led bulb and no light pattern (4.1.2 (a)) | 1 |
| 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 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Throttle operating incorrectly retaining screw missing |6.2.1f| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake caliper operating mechanism has excessive travel rear brake pedal has excess travel |1.1.16 |e| |i|| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Drive chain sprocket worn to excess cush rubbers have excessive play (6.1.7 (c) (i)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Horn not working (7.7 (a)) | 1 |