| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 19 |
| Headlamp aim beam image kick up to the offside |1.6| | 9 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 8 |
| Registration plate issues | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Rear Direction indicators not working |1.5.1c| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 3 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| 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| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear 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 |
| Centre Rear Lower Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Front suspension assembly component loose |2.3.1| | 1 |
| Offside Front Lower Footrest insecure |6.2.12 |a|| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Stop lamp emits other than a steady red light HANDBRAKE |1.3.1b| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Stop lamp does not illuminate immediately a brake applies handbrake |1.3.1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp use of indicators (4.2.3 (b)) | 1 |
| Offside Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Steering damper ineffective (2.1.4 (d) (i)) | 1 |
| Lower Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Front wheel bearings are excessively tight |2.3.5b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Brake component is severely distorted |3.1.5| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Fuel tank leaking excessively or a risk of fire tap diaphragm failed |6.1.3 |b| |ii|| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp does not illuminate immediately a brake applies all |1.3.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Central Front Upper Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Central Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Central Rear All position lamps do not illuminate immediately when switched on fuse has blown controlling both position lights |1.1.3a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Headlamp aim beam image kick up to the offside Tape applied to convert to flat beam pattern. |1.6| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |