| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 52 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Registration plate issues | 16 |
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Drive chain excessively loose |6.2.1d| | 15 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 14 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Steering headbearing has excessive free play |2.2.2| | 12 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Front wheel bearings have excessive free play |2.3.5b| | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 8 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 7 |
| Throttle operating incorrectly |6.2.1f| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Handlebar deformed |2.1.1b| | 6 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 5 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Horn not working |1.7.3a| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Front suspension assembly component loose |2.3.1| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Fuel cap ineffective Not able to test,no key. (6.1.3 (b) (i)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Centre Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Centre Lower Brake reaction bracket insecure |3.2.A1j| | 1 |
| Nearside Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Rear Brake disc fractured REAR DISC CRACKING AROUND NUMEROUS VENT HOLES (1.1.14 (a) (ii)) | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp not working from front |4.3.1 |a| |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 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |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 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake performance not tested (1.2.1 (g)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Offside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Horn missing |1.7.1| | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Nearside Rear Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Headlamp missing |1.2.3a| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Offside Rear Shock absorber likely to become detached Top bolt missing (5.3.2 (a) (ii)) | 1 |
| Front Engine mounting/bracket fractured (6.1.8 (a) (ii)) | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| All direction indicators obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure rear mudguard missing |6.1.1 |b| |i|| | 1 |
| Front Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced front mudguard missing |6.1.1 |b| |ii|| | 1 |
| Offside Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced chain adjuster missing |6.1.1 |b| |ii|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Braking system does not have an approriate system/s fitted according to its age |3.1.1| | 1 |
| Nearside Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Nearside Rear spring worn and seriously weakened |2.4A1b|ii|| | 1 |
| Offside Rear spring worn and seriously weakened |2.4A1b|ii|| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Rear suspension component seized |2.4A2a|ii|| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Registration plate lamp issues | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Throttle operating incorrectly sticking on lock |6.2.1f| | 1 |
| Shock absorber has negligible damping effect rear dampers not moving (5.3.2 (b)) | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Steering linkage has excessive free play |2.2.2| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Brake excessively binding adjusted too tight (1.2.1 (f)) | 1 |
| Front Valve stem seriously misaligned locknut missing (5.2.3 (j)) | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Outer Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Inner Front Upper Front position lamp insecure |1.1.1c| | 1 |
| Inner Front Lower Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Offside Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Inner Rear Lower Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Inner Front Lower Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Inner Rear Lower Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Inner Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Lower Headlamp insecure |1.2.3b| | 1 |
| Offside Throttle operating incorrectly Throttle hanging up on release |6.2.7 |a| |i|| | 1 |
| Exhaust has a major leak of exhaust gases Silencer area |6.1.2 |a|| | 1 |
| Offside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Brake pedal attachment screws missing. |3.1.2b| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level |1.1.10 |d| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Centre Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Nearside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Drive chain so loose it is likely to fail Adjusters not secure |6.1.7 |c| |ii|| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Throttle operating incorrectly sticking |6.2.1f| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Suspension attachment bracket/mounting insecure rear wheel spindle insecure (5.3.3 (a) (i)) | 1 |
| Inner Steering lock stop ineffective |2.1.3| | 1 |