| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 52 |
| Registration plate issues | 9 |
| Horn not working |1.7.3a| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp insecure |1.2.3b| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Stop lamp remains on when the brakes are released | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 4 |
| Front Horn not working |1.7.3a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Brake hose damaged | 2 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Horn not working (7.7 (a)) | 2 |
| Rear All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Fuel tank leaking |7.2.1a| | 2 |
| Rear 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| is excessively distorted |3.2.A1m| | 2 |
| Offside Headlamp insecure |1.2.3b| | 2 |
| Brake pedal cracked |3.1.2c| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Brake pipe excessively corroded | 2 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Headlamp aim projected beam image obviously incorrect Flick up to right (4.1.2 (c)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front wheel spindle loose securing bolts loose and missing |2.3.3a| | 1 |
| Offside Front Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies on sidecar |1.3.1a| | 1 |
| Nearside Front Direction indicator light intensity significantly reduced |4.4.3 |a|| | 1 |
| Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Centre Front Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Centre Front Direction indicator not working |1.5.1c| | 1 |
| Centre Front Brake lever is inoperative |3.1.3c| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front Shock absorber has a serious fluid leak O/s fork seal leaking oil (5.3.2 (b)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Front Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride axle bolt |6.2.1h| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Rear Stop lamp not working (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 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Brake fluid contaminated |1.8 |a|| | 1 |
| Brake performance not tested |1.2.1 |g|| | 1 |
| Rear Brake master cylinder has a seized master cylinder pivot. |3.2.B5| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front Brake master cylinder severely corroded |3.2.B1b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Riders seat insecure |6.2.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Stop lamp adversely affected by the operation of another lamp tail lamp and stop lamp incorrectly wired (4.3.3 (b)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Front Motorcycle structure is so deformed it is likely to adversely affect braking or steering Clutch Lever Fouling Fairing on Full Right Hand Lock Test (6.1.1 (a) (ii)) | 1 |
| Offside Front Motorcycle structure is so deformed it is likely to adversely affect braking or steering Brake Lever Fouling Fairing on Full Left Hand Lock Test - Brake Lever Also Bent (6.1.1 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected Throttle Doesnt return to Idle Speed Position as it should after Operation (6.2.7 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen Requires Adjustment (4.1.2 (a)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Valve stem seriously damaged Rubber perished. |5.2.3 |j|| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| All direction indicators not working fuse blown |4.4.1 |a| |ii|| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Rear Brake drum|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Brake disc contaminated fork oil on disc (1.1.14 (b)) | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Shock absorber insecurely attached Rear shock absorber - top bolt loose (5.3.2 (a) (i)) | 1 |
| Headlamp insecure Loose on mounting bolts (4.1.1 (c)) | 1 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 1 |
| Offside Rear Direction indicator not working |1.4.A.2c| | 1 |
| Front Shock absorber has negligible damping effect |2.7.5| | 1 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 1 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 1 |
| Brake pedal actuating lever has abnormal movement indicating maladjustment or excessive wear |3.3.A.1h| | 1 |
| Rear Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Outer Indicator tell tale not functioning |1.5.2| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Brake caliper insecurely mounted and braking performance affected Upper mounting bolt missing lower mounting bolt loose (1.1.16 (c) (ii)) | 1 |
| Nearside Front Brake caliper insecure Both mounting bolts loose (1.1.16 (c) (i)) | 1 |
| Rear Brake rod excessively damaged |3.2.A1c| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Front Direction indicator lens defective such that the emitted light is adversely affected Lens cracked, showing white light (4.4.1 (b) (ii)) | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicator obviously incorrectly positioned Indicators too close together, law requires 240mm distance between indicators. (4.4.3 (a)) | 1 |
| Offside Front Shock absorber has a serious fluid leak Leaking fluid, stantion heavily scored by bush. (5.3.2 (b)) | 1 |
| Front Direction indicator lens defective such that the emitted light is adversely affected |4.4.1 |b| |ii|| | 1 |
| Rear reflector on sidecar dirty and function impaired |1.4.2a| | 1 |
| Nearside Rear Footrest insecure |6.2.12 |a|| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Brake component is excessively corroded |3.1.5| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam faulty high/low beam switch intermittently interrupting headlights. |4.1.1 |a| |ii|| | 1 |
| Registration plate lamp issues | 1 |
| Stop lamp remains on when the brake is released front switch |1.3.1e| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake lever excessively corroded |3.2.A1c| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |