| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 78 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 47 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 38 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 35 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 21 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 21 |
| Headlamp aim beam image kick up to the offside |1.6| | 14 |
| Front Brake excessively binding (1.2.1 (f)) | 13 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 13 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 12 |
| Throttle operating incorrectly |6.2.1f| | 11 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Exhaust excessively deteriorated |7.1.1a| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 8 |
| Rear Brake excessively binding (1.2.1 (f)) | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Registration plate issues | 6 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 6 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 5 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 5 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 5 |
| Front Brake excessively binding |1.2.1 |f|| | 4 |
| Rear Brake excessively binding |1.2.1 |f|| | 4 |
| Centre Exhaust excessively deteriorated |7.1.1a| | 4 |
| Rear Brake disc|s| cracked |3.2.A1g| | 4 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 4 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 4 |
| Horn not working |1.7.3a| | 4 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Front Throttle operating incorrectly |6.2.1f| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Front position lamp incorrect colour |1.1.2a| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Headlamp switch faulty |1.2.4| | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 3 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| All direction indicators not working (4.4.1 (a) (ii)) | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Rear Brake cylinder insecurely mounted |3.2.B1a| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Rear Brake disc fractured |1.1.14 |a| |ii|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Decelerometer brake test indicates a binding brake |3.3.E1d| | 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 Brake disc|s| cracked |3.2.A1g| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 2 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 2 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Rear Suspension arm corroded and seriously weakened (5.3.3 (b) (i)) | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Direction indicators not working |1.5.1c| | 2 |
| An item not tested |Manual| | 2 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Front Brake grabbing severely (1.2.1 (c)) | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Offside Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Brake performance not tested (1.2.1 (g)) | 2 |
| Front suspension assembly component loose |2.3.1| | 2 |