| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 52 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 47 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 41 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 32 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 29 |
| Steering headbearing has excessive free play |2.2.2| | 25 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 24 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 16 |
| Registration plate issues | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 15 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 12 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 11 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 11 |
| Registration plate lamp issues | 10 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 8 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 8 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 6 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 6 |
| Horn not working |1.7.3a| | 6 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 5 |
| Headlamp aim not tested |1.6| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 5 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 4 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 4 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Rear wheel insecure |4.2.3b| | 3 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 3 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| An item not tested |Manual| | 2 |
| Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front brake disc in such a condition that it is seriously weakened | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Centre Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Offside Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Brake performance not tested |3.3| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Fuel cap missing |7.2.2a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |