| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 19 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 10 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Registration plate issues | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Stop lamp remains on when the brakes are released | 3 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Central Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Brakes imbalanced across an axle | 3 |
| Stop lamp not working |1.2.1b| | 3 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Rear Brake disc contaminated (1.1.14 (b)) | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Parking brake lever has no reserve travel |3.1.6b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies brake pedal |1.3.1a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Motorcycle structure excessively corroded rear swinging arm corroded and holed |6.1.1a| | 1 |
| Decelerometer brake test neither brake control achieves an efficiency of 25% |3.3.E1c| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Gradient brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.D1b| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Service brake efficiency less than 50% of the required value (1.2.2 (a) (ii)) | 1 |
| Nearside Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Floor brake test indicates a binding brake When wheel rotated in reverse. |3.3.C2c| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts Both hoses insecure. |3.2.B2c| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Offside Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Centre Front Indicator tell tale not functioning |1.5.2| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Offside Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Sidecar wheel alignment has excessive toe-out (2.4 (b)) | 1 |
| Nearside Front Direction indicator not working Sidecar (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working Sidecar (4.4.1 (a) (ii)) | 1 |
| Horn not working |1.6.2a| | 1 |
| Rear parking brake recording little or no effort | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 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 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Position lamp not working mean |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Service brake excessively binding |1.2.1 |f|| | 1 |
| Offside Parking brake inoperative on one side |1.4.1 |a|| | 1 |
| Parking brake lever defective so that it cannot be satisfactorily operated |1.1.6 |d|| | 1 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 1 |
| Nearside Front Service brake excessively binding (1.2.1 (f)) | 1 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 1 |
| Horn not loud enough to be heard by another road user intermittent fault when turning left and right locks |1.7.3a| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls on left lock and right lock - fouling on windshield |2.1.2b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Brake pedal anti-slip provision missing |3.3.A.1b| | 1 |
| Offside Rear Stop lamp missing |1.2.1a| | 1 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Offside Rear Sub-frame attachment bracket/mounting insecure |2.4.G.1| | 1 |
| Service brake: efficiency below requirements |3.7.B.7| | 1 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 1 |
| Front Brake pedal spongy |3.3.B.1b| | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Brake performance not tested parking brake (1.2.1 (g)) | 1 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 1 |
| All position lamps not working |1.1.A.3b| | 1 |
| Nearside Rear brake disc contaminated by oil |3.5.1h| | 1 |
| Offside Rear brake disc contaminated by oil |3.5.1h| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 1 |
| Front Front suspension assembly has excessive free play between the sliding members |9.2.5d| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Sidecar rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Steering control handlebar movement restricted by trapped cables (2.1.2c) | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies Light does not work when rear brake is depressed. (1.3.1a) | 1 |
| Centre Headlamp dipped beam affected by the operation of another lamp (1.2.2c) | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake lagging in operation Front brake controlled by brake foot pedal (1.2.1 (d)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Nearside Rear Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 1 |
| Nearside Rear Stop lamp not working |1.2.1b| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Lower Exhaust excessively deteriorated |7.1.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Front shock absorber leaking oil |9.2.7b| | 1 |
| Front Valve stem seriously damaged |4.1.D.1e| | 1 |
| Offside Rear reflector missing |1.5.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Parking brake inoperative on one side (1.4.1 (a)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Nearside Front Direction indicator not working |1.4.A.2c| | 1 |
| Rear brake application uneven | 1 |
| Windscreen wiper does not clear the windscreen effectively | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Nearside Rear Brake pipe inadequately clipped across rear axle |3.6.B.1| | 1 |
| Offside Rear brake drum contaminated by brake fluid |3.5.1h| | 1 |
| Offside Rear Braking system leaking cylinder |3.6.A.1| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |