| Most common failures | No# failures |
|---|
| Registration plate issues | 40 |
| Headlamp aim out of alignment | 39 |
| Rear reflector on motorcycle missing |1.4.1| | 36 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 18 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Horn not working |1.7.3a| | 10 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 10 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Offside Front Direction indicator not working |1.5.1c| | 6 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Nearside Front Direction indicator not working |1.5.1c| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| An item not tested |Manual| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 3 |
| 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| | 3 |
| Front Direction indicators not working |1.5.1c| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Nearside 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| | 2 |
| Offside 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| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front position lamp missing |1.1.1a| | 2 |
| Rear 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 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Rear mono-shock insecure |2.4.B.4| | 1 |
| Nearside Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Front Upper Horn not working |1.7.3a| | 1 |
| Nearside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Offside Front Upper Direction indicator not working |1.5.1c| | 1 |
| Centre Front Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Brake cylinder severely corroded |3.2.B1b| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Sidecar rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| 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 Exhaust has part of the system missing |7.1.1a| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Lower Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Rear reflector on motorcycle dirty and function impaired |1.4.2a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies adjusted switch |1.3.1a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Direction indicator insecure |1.5.3b| | 1 |
| Stop lamp not working hand (4.3.1 (a) (ii)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Offside Rear suspension component cracked |2.4.A.1a| | 1 |
| Nearside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Stop lamp not working rear brake switch not working (4.3.1 (a) (ii)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Riders seat with a defective supporting structure front seat guide missing (6.2.5 (a) (i)) | 1 |
| Headlamp lens seriously defective (4.1.1 (b) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen lens melted interfering with beam (4.1.2 (a)) | 1 |
| Offside Front Headlamp light intensity severely reduced right headlight (4.1.4 (a)) | 1 |
| Offside Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Fuel system component leaking number 1 carb body leaking (6.1.3 (b) (i)) | 1 |
| Front Brake component is fractured |3.1.5| | 1 |
| Nearside Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front suspension assembly has an insecure fork brace |2.3.4d| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Rear Direction indicators not working bulb replaced |1.5.1c| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Stop lamp not working front control (4.3.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Rear Upper Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Front Direction indicator obscured |1.5.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Motorcycle structure adversely modified |6.1.1b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Centre Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Front suspension assembly component loose |2.3.1| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front shock absorber seal failed and leaking oil both fork seals |2.3.3| | 1 |
| Offside Front Brake disc contaminated |1.1.14 |b|| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Handlebar mounting clamp loose left hand |2.1.1a| | 1 |
| Nearside Rear Lower Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Brake lever insecure |3.1.2a| | 1 |
| Offside Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Front Lower Front mudguard insecure |2.3.7| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Rear reflector on sidecar missing |1.4.1| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Front Brake excessively binding |1.2.1 |f|| | 1 |
| Offside Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Front Headlamp missing |1.2.3a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Front Brake hose leaking fluid |3.2.B4| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Offside Rear Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake cylinder leaking hydraulic fluid caliper |3.2.B1e| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |