| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Registration plate issues | 8 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear brake pedal |1.3.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Rear Rear reflector missing rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Rear Footrest missing passenger footrests are missing (6.2.12 (a)) | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Steering linkage ball joint worn to the extent there is a serious risk of detachment (2.1.3 (b) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Brake pipe leaking (1.1.11 (b)) | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Offside Front Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Central Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Outer Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Rear Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |