| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 37 |
| Rear reflector on motorcycle missing |1.4.1| | 37 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 32 |
| Registration plate issues | 18 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 18 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 18 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 13 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 11 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Throttle operating incorrectly |6.2.1f| | 9 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 8 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 8 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Front suspension has inadequate damping effect. |2.3.6c| | 6 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 6 |
| Offside Rear Footrest missing |6.2.1a| | 6 |
| Rear Footrest missing |6.2.1a| | 5 |
| Rear position lamp insecure |1.1.1c| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 5 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Front position lamp incorrect colour |1.1.2a| | 4 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| 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| | 4 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Riders seat insecure |6.2.1a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Brake hose damaged | 3 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Lower Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Footrest missing |6.2.1a| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Offside Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Nearside Rear Brake disc|s| insecure |3.2.A1g| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Offside Steering lock stop maladjusted |2.1.3| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Brake caliper|s| insecure |3.2.A1j| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Handlebar handgrip missing |2.1.1c| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Brake hose leaking fluid |3.2.B4| | 1 |
| Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Brake component leaking fluid |3.2.B4| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Front Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Offside Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Centre Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Front Motorcycle structure cracked |6.1.1a| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Footrest missing |6.2.1a| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Inner Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake component has an inadequate repair |3.1.5| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Steering operation impeded by a fairing |2.1.4 |e|| | 1 |
| Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Brake component has an inadequate repair |3.1.5| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear Brake master cylinder has an excessively worn master cylinder pivot. |3.2.B5| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Nearside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| An item not tested |Manual| | 1 |
| Offside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Stop lamp does not illuminate immediately a brake applies when the front brake is applied |1.3.1a| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Lower Rear mono-shock insecure Bolt/nut loose |2.4.B.4| | 1 |
| Nearside Front Brake component is fractured |3.1.5| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Front Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Lower Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear An item not tested |Manual| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Nearside Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Fuel tank insecure bolt missing (6.1.3 (a) (i)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Nearside Front Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Rear Footrest missing both (6.2.12 (a)) | 1 |
| Nearside Front Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Headlamp insecure (1.2.3b) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |