| Most common failures | No# failures |
|---|
| Front Roller brake test indicates a binding brake |3.3.A1a| | 33 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 22 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 18 |
| Headlamp aim out of alignment | 18 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 13 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Throttle operating incorrectly |6.2.1f| | 11 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 10 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Registration plate issues | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 6 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 6 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Front Brake excessively binding (1.2.1 (f)) | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Exhaust excessively deteriorated |7.1.1a| | 5 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 4 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front position lamp incorrect colour |1.1.2a| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 3 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |