| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 32 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 13 |
| Front wheel bearings have excessive free play |2.3.5b| | 11 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Horn not working |1.7.3a| | 8 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 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 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Brake pedal is inoperative |3.1.3c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Front Upper Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Horn control defective |1.7.2a| | 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 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Registration plate issues | 1 |
| Rear reflector on motorcycle dirty and function impaired |1.4.2a| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Rear Upper Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Rear Motorcycle structure adversely modified |6.1.1b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Service brake is causing the steering wheel to severely pull one way |1.2.1 |b| |i|| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Rear An item not tested |Manual| | 1 |
| Front Brake lever insecure Adjuster lock nut missing |3.1.2a| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Offside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Offside Front Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Hazard warning switch missing |1.4.B.1d| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Suspension arm pin or bush excessively worn sidecar |5.3.4 |a| |i|| | 1 |
| Front Sidecar direction indicator not working |1.5.1c| | 1 |
| Rear Sidecar direction indicator not working |1.5.1c| | 1 |
| Sidecar rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Sidecar front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Front Brake caliper insecure bolts loose |1.1.16 |c| |i|| | 1 |
| Front Wheel spindle loose nut loose |5.2.1 |c| |i|| | 1 |
| Front Wheel more than one fixing loose both pinch bolts loose |5.2.1 |a| |ii|| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Parking brake efficiency below requirements |3.7.B.7| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.8| | 1 |
| Brake clevis joint locking device missing |3.5.1l| | 1 |
| Centre Brake pipe inadequately supported |3.6.B.1| | 1 |
| Front Body component insecure mudgaurd |6.2.1 |a| |i|| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Centre Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Direction indicator not working left hand front (4.4.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Stop lamp not working with front brake (1.2.1b) | 1 |
| Front position lamp(s) obviously incorrectly positioned requies 2 lights (1.1.A.3a) | 1 |
| Rear position lamp(s) obviously incorrectly positioned requires 2 lights (1.1.A.3a) | 1 |
| Stop lamp obviously incorrectly positioned requires 2 lights (1.2.1a) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Fuel tank leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Front Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Offside Front Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 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 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Offside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls foot control (4.3.2 (a) (iii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Suspension arm ball joint excessively worn Side car swinging arm. (5.3.4 (a) (i)) | 1 |