| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 46 |
| Headlamp aim beam image kick up to the offside |1.6| | 19 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 16 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 14 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 13 |
| Rear reflector on motorcycle missing |1.4.1| | 13 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Registration plate issues | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Horn not working |1.7.3a| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Registration plate lamp issues | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Offside Rear Direction indicator not working |1.5.1c| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Front Position lamp not working (4.2.1 (a)) | 4 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Position lamp not working |4.2.1 |a|| | 3 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Offside Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| 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| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing head bearings very notchy unable to steer safely |2.2.1a| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking hand rail |6.1.1c| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Stop lamp not working from front control |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride chain adjuster broken |6.2.1h| | 1 |
| Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Suspension component mounting has an unsafe modification Pinch bolts missing from front right fork leg (5.3.3 (c) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Offside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies both brakes |1.3.1a| | 1 |
| Rear Rear suspension bush has excessive free play shock absorber lower mount |2.4.A2a|i|| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 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 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Lower Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Offside Outer Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear An item not tested |Manual| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Position lamp not working (4.2.1 (a)) | 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 |
| Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Offside Rear Lower Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort To much pedal travel |3.3.A1c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake hose bulging under pressure (1.1.12 (d)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Brake locking device missing |3.2.A1e| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear All direction indicators obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Rear Brake rod insecure torque arm (1.1.15 (c)) | 1 |
| Rear Brake pedal insecure adjuster lock nut loose (1.1.2 (e) (i)) | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Steering control handlebar movement restricted by taut cables speedo cable caught |2.1.2c| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Inner Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Brake locking device missing |3.2.A1e| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Inner Front Steering lock stop ineffective |2.1.3| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Offside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Front Motorcycle structure cracked |6.1.1a| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Stop lamp not working rear switch. (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on reg plate lamp |1.1.3a| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Direction indicator incorrect colour both sides (4.4.3 (a)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |