| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 34 |
| Rear reflector on motorcycle missing |1.4.1| | 26 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 20 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 17 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 16 |
| Registration plate issues | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 13 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Rear Brake disc|s| cracked |3.2.A1g| | 7 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 7 |
| Horn not working |1.7.3a| | 7 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Throttle operating incorrectly |6.2.1f| | 7 |
| Drive chain excessively tight |6.2.1d| | 6 |
| 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| | 6 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| 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)) | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Throttle operating incorrectly Sticking. (6.2.7 (a) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort Warped. (1.2.1 (e)) | 1 |
| Rear Direction indicator obviously incorrectly positioned Within minimum spacing requirement of 180mm. (4.4.3 (a)) | 1 |
| Brake fluid reservoir fluid level significantly below minimum level FRONT |1.1.10 |d| |ii|| | 1 |
| Stop lamp not working FRONT BRAKE |4.3.1 |a| |ii|| | 1 |
| Offside Front Brake component leaking fluid |3.2.B4| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Rear position lamp missing |1.1.1a| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Front All direction indicators adversely affected by the operation of another lamp all indicators flash when OSF indicator is selected (4.4.3 (b)) | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Front suspension assembly component missing clamp bolt missing |2.3.1| | 1 |
| Nearside Front suspension assembly component loose loose |2.3.1| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear reflector on motorcycle missing new fitted |1.4.1| | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Rear Suspension arm modified so the suspension is inoperative (5.3.3 (c) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Centre Rear Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Front Brake hose which buldges |3.2.B4| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Centre Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Front Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Direction indicator insecure |1.5.3b| | 1 |
| Offside Direction indicator insecure |1.5.3b| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Offside Front Brake hose excessively twisted (1.1.12 (b) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Offside Front Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Upper Handlebar deformed |2.1.1b| | 1 |
| Centre Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Nearside Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Front Brake master cylinder leaking cap on wrong not sealing (1.1.10 (b) (ii)) | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Drive chain excessively tight, so that it is likely to fail |6.1.7 |k| |ii|| | 1 |
| Rear Brake pipe excessively damaged |3.2.B2a| | 1 |
| Offside Front Brake component is severely distorted |3.1.5| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp not working brake pedal switch (4.3.1 (a) (ii)) | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Direction indicator affected by the operation of another lamp in tail light |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies comes on late |1.3.1a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Offside Upper Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Front Brake component inadequately mounted flexy hose |1.1.21 |c|| | 1 |
| Offside Front Brake component inadequately mounted flexy hose |1.1.21 |c|| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Upper Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Position lamp adversely affected by the operation of another lamp when indicator applied |4.2.3 |b|| | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp when indicator applied |4.3.3 |b|| | 1 |
| Nearside Rear Motorcycle structure joining/attachment plate or fastening insecure fairing insecure |6.1.1 |b| |i|| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Brake component has an inadequate repair brake bolt |3.1.5| | 1 |
| Front Brake hose damaged and likely to fail |1.1.12 |a|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Offside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |