| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 46 |
| Headlamp aim out of alignment | 43 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 25 |
| Registration plate issues | 19 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| 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| | 7 |
| Drive chain excessively tight |6.2.1d| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 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 |
| Horn not working |1.7.3a| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Offside Front Brake pipe union leaking fluid |3.2.B4| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Headlamp incorrect colour |1.2.1| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear mono-shock pivot seized |2.4.B.4| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Offside Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Brake disc|s| excessively worn rear |3.2.A1l| | 1 |
| Front shock absorber seal failed and leaking oil Both |2.3.3| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock cables routed incorrect |2.1.4| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Nearside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| An item not tested |Manual| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Central Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Steering linkage has excessive free play |2.2.2| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Sidecar front position lamp incorrect colour |1.1.2a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Indicator switch insecure |1.5.4| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Centre Front Lower Horn not working |1.7.3a| | 1 |
| Offside Front Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Lower Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Central Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Brake lever mounting insecure |3.1.2a| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Lower Brake hose excessively kinked |3.2.B3a| | 1 |
| Front Upper Brake hose fouling |3.2.B3b| | 1 |
| Front Brake component is severely distorted |3.1.5| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Offside Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front An item not tested |Manual| | 1 |
| Offside Rear 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 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Front Headlamp main beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Offside Rear Brake locking device missing |3.2.A1e| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Indicator tell tale not operating correctly |1.5.2| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Position lamp showing white light to the rear lens damage (4.2.3 (a) (ii)) | 1 |
| Offside Front Outer Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Stop lamp not working From rear control (4.3.1 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Offside Front Brake hose leaking At caliper (1.1.12 (c)) | 1 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Throttle operating incorrectly sticking on hand control (6.2.7 (a) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Nearside Front Brake hose leaking (1.1.12 (c)) | 1 |