| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 68 |
| Registration plate issues | 28 |
| Rear reflector on motorcycle missing |1.4.1| | 18 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Horn not working |1.7.3a| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 5 |
| 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| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Brake locking device missing |3.2.A1e| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Fuel system component leaking |7.2.1a| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front wheel bearings have excessive free play NEED REPLACING |2.3.5b| | 1 |
| Front Headlamp insecure HEADLIGHT NOT MOUNTED PROPERLY, CAN`T BE ADJUSTED |1.2.3b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on BULB NEEDS REPLACING |1.1.3a| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Horn control not functioning. Cleaned out with WD40 |1.7.2b| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Brake back plate insecure |1.1.14 |d|| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Front Upper Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking engine mounting |6.1.1c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Brake pipe likely to become detached or damaged no flexi hose to rear swing arm |1.1.11 |d| |ii|| | 1 |
| Rear Brake pedal has insufficient reserve movement |3.3.A.5| | 1 |
| Front Brake pedal has insufficient reserve movement |3.3.A.5| | 1 |
| Rear Brake cable insecure | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Fuel system component insecure Bolt missing from tank |7.2.1b| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute Both |1.5.1c| | 1 |
| Offside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Brakes imbalanced across an axle | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Front Brake fluid reservoir cap missing |3.2.B1c| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside 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 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Nearside Rear Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Brake reaction bracket securing bolt|s| missing split pin missing |3.2.A1j| | 1 |
| Rear wheel spindle securing nut locking device missing split pin missing |2.4.A.2b| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Direction indicator missing all indicators ! |1.5.1a| | 1 |
| Front Clutch lever positioned so it cannot be readily operated. full clutch assembly insecure |6.2.1g| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Throttle operating incorrectly throttle grip loose |6.2.1f| | 1 |
| Rear Suspension arm corroded and seriously weakened |5.3.3 |b| |i|| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Nearside Outer Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front suspension assembly component excessively bent |2.3.1| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Headlamp insecure |1.7.3| | 1 |
| Nearside Rear Rear wheel bearing rough when rotated |2.6.1| | 1 |
| Front Brake lever cannot be applied smoothly |9.3.1h| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Hazard warning switch faulty |1.4.B.1d| | 1 |
| Rear Suspension arm cracked |2.4.G.1| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 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 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Brake performance not tested |3.3| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| All direction indicators incorrect colour |4.4.3 |a|| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Offside Front Direction indicators not working intermittant |1.5.1c| | 1 |
| Front Front mudguard insecure replaced missing bolts |2.3.7| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Gradient brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.D1b| | 1 |
| Nearside Front Mechanical brake component securing device loose |3.5.1i| | 1 |
| Nearside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Nearside Rear Stop lamp not working |1.2.1b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Exhaust is leaking and excessively noisey (7.1.1b) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 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 Lower Brake hose connection leaking (1.1.12 (c)) | 1 |
| Offside Front Lower Brake hose connection leaking (1.1.12 (c)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Offside Rear Brake hose leaking on a hydraulic braking system (1.1.12 (c) (ii)) | 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 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Subframe mounting prescribed area excessively damaged significantly reducing structural strength (5.3.6 (a) (i)) | 1 |
| Nearside Rear Service brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced lower engine bolt (6.1.1 (b) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp(s) not working from rear switch (4.3.1 (a) (ii)) | 1 |
| Nearside Front Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Offside Front Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Offside Front Footrest insecure Mounting bracket loose (6.2.12 (a)) | 1 |
| Hazard warning lamps not fitted (4.4.1 (d)) | 1 |
| Front Exhaust has a major leak of exhaust gases both (6.1.2 (a)) | 1 |
| Rear Shock absorbers insecurely attached welding on mounting (5.3.2 (a) (i)) | 1 |
| Front Steering head bearings has excessive wear or free play (2.2.2 (g)) | 1 |
| Front Shock absorbers has a serious fluid leak both sides (5.3.2 (b)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Offside Rear Position lamp not working (4.2.1 (a)) | 1 |