| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 27 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 9 |
| Throttle operating incorrectly |6.2.1f| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Front wheel bearings are excessively rough |2.3.5b| | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Registration plate issues | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Horn not working |1.7.3a| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Rear Brake disc|s| cracked |3.2.A1g| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Direction indicators not working |1.5.1c| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Motorcycle structure excessively damaged |6.1.1a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Throttle operating incorrectly |6.2.1f| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| An item not tested |Manual| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Horn not working replaced horn unit |1.7.3a| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Outer Front Lower Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Outer Front Upper Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Front Upper Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake hose leaking brake caliper |1.1.12 |c|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Sidecar front position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Sidecar rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| 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 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Brake hose leaking |1.1.12 |c|| | 1 |
| Rear Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake lagging in operation |1.2.1 |d|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Central Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak both (5.3.2 (b)) | 1 |
| Steering operation restricted in free movement from lock to lock cables (2.1.4 (c)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Central Rear Valve stem seriously damaged cracked and split (5.2.3 (j)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Stop lamp not working both controls (4.3.1 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Central Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |