| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 42 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 38 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 22 |
| Rear reflector on motorcycle missing |1.4.1| | 20 |
| Drive chain excessively loose |6.2.1d| | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 12 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 8 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Registration plate issues | 7 |
| Front Brake excessively binding (1.2.1 (f)) | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 6 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 4 |
| Registration plate lamp issues | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 4 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Horn not working |1.7.3a| | 3 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Brake pipe union leaking fluid |3.2.B4| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front Brake lever insecure |3.1.2a| | 3 |
| Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Nearside Front Handlebar mounting clamp loose |2.1.1a| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 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)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Fork yoke deformed |2.1.1b| | 1 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Upper Motorcycle structure adversely modified |6.1.1b| | 1 |
| Offside Upper Motorcycle structure adversely modified |6.1.1b| | 1 |
| Nearside Front Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front mudguard insecure Held in place by inadequate plastic bolts |2.3.7| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Centre Front Brake cylinder severely damaged |3.2.B1b| | 1 |
| Shock absorber has a serious fluid leak right fork seal (5.3.2 (b)) | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Centre Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Stop lamp not working front brake light switch not working (4.3.1 (a) (ii)) | 1 |
| Brake performance not tested |3.3| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| An item not tested |Manual| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Horn is not a constant note |1.7.3c| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Headlamp light intensity severely reduced Head lamp lens damaged (4.1.4 (a)) | 1 |
| Front Stop lamp not working Not working from front brake (4.3.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Brake excessively binding (1.2.1 (f)) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Offside Front Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Fuel system component insecure |7.2.1b| | 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 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear reflector on motorcycle dirty and function impaired |1.4.2a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front position lamp missing not working |1.1.1a| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Nearside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Offside Front Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Roller brake test indicates a binding brake one or both front calipers binding on front wheel |3.3.A1a| | 1 |
| Offside Front Horn sounds harsh or grating |1.7.3c| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Throttle operating incorrectly Insecure on handlebar |6.2.1f| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Brake pedal so insecure that the brake cannot be readily applied mounting bracket broken |1.1.2 |e| |ii|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected stiff and notchy |2.2.2 |f| |ii|| | 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 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Offside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Offside Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Rear reflector defective or damaged by more than 50% of the reflecting surface |4.8.1 |a| |ii|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Brake component has an inadequate repair |3.1.5| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Front Upper Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Offside Front Brake component insecure pad pin locking device missing |1.1.21 |c|| | 1 |
| Nearside Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Brake hose leaking (1.1.12 (c)) | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 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 |
| Offside Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front An item not tested |Manual| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Centre Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Footrest missing BOTH (6.2.12 (a)) | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Brake hose leaking fluid |3.2.B4| | 1 |
| Nearside Front Upper Brake hose fouling |3.2.B3b| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear 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 |
| Offside Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Lower Brake component insecure brake pipe insecure braket screw broken (1.1.21 (c)) | 1 |
| Nearside Lower Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Headlamp aim not tested no pattern due to LED bulb (4.1.2 (b)) | 1 |
| Rear Brake hose leaking |1.1.12 |c|| | 1 |