| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 46 |
| Headlamp aim out of alignment | 32 |
| Registration plate issues | 26 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 9 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| 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| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Horn not working |1.7.3a| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 3 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Brake hose excessively deteriorated | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Brake hose damaged | 1 |
| Inner Rear reflector on motorcycle missing |1.4.1| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Lower Exhaust mounting missing |7.1.1c| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies Inop |1.3.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies Switch adjustment |1.3.1a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded caliper |3.2.A1h| | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Horn missing |1.7.1| | 1 |
| Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Lower Brake locking device missing |3.2.A1e| | 1 |
| Nearside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Offside Lower Fairings insecure and likely to impede the steering bolts missing |2.1.2e| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Nearside Front Brake cylinder leaking hydraulic fluid caliper |3.2.B1e| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Lower Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Drive chain fouling another component |6.2.1d| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Upper Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Centre Front Lower Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced |6.1.1 |b| |ii|| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Direction indicator flashing more than 120 times per minute all |1.5.1c| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Brake pipe excessively damaged |3.2.B2a| | 1 |
| Offside Front Brake pipe excessively damaged |3.2.B2a| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Suspension component modified so the suspension is inoperative |5.3.3 |c| |ii|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Centre Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Suspension attachment bracket/mounting insecure bolt snapped |5.3.3 |a| |i|| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Offside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Upper Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Indicator tell tale not functioning |1.5.2| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Nearside Front Lower Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 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 Brake performance not tested |3.3| | 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 suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling chain adjusters out of alignment |2.5.1| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake component inadequately mounted reaction bracket split pins missing (1.1.21 (c)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 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 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Central Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Rear Position lamp showing white light to the rear tail light has white around the outer edge (4.2.3 (a) (ii)) | 1 |
| Front Brake hose excessively twisted both pipes fitted incorrectly fitted (up side down) and likely to fail (1.1.12 (b) (ii)) | 1 |
| Handlebar so insecure it is likely to become detached both-- missing bolts x3 (2.2.1 (b) (ii)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Registration plate lamp issues | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |