| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 28 |
| Registration plate issues | 17 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Registration plate lamp issues | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| All position lamps not working |1.1.A.3b| | 2 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Steering headbearing has excessive free play |9.2.4| | 2 |
| Position lamp switch missing |1.1.A.1| | 2 |
| Nearside Rear reflector missing |1.5.1a| | 2 |
| Offside Rear reflector missing |1.5.1a| | 2 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Offside Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 1 |
| Centre Exhaust system not adequately supported |7.1.1| | 1 |
| Rear Rear fog lamp missing |1.3.2a| | 1 |
| Front Valve stem seriously damaged Valve perished (5.2.3 (j)) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies front lever |1.3.1a| | 1 |
| Rear Suspension arm cracked |2.4.G.1| | 1 |
| Front Front position lamp|s| not working |1.1.A.3b| | 1 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Front Upper Throttle operating incorrectly Throttle sticks open at full LH lock |6.2.1f| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Handlebar grip insecure to handlebar Left & Right Grip Insecure (2.2.1 (d) (ii)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Lower Exhaust mounting missing |7.1.1c| | 1 |
| Handlebar handgrip not secure to handlebars. accelerator is sticking |9.2.1a| | 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 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 1 |
| Offside Front brake caliper leaking |3.6.A.1| | 1 |
| Brake cable has restricted free movement |3.5.1k| | 1 |
| Front brake caliper leaking |3.6.A.1| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Brake caliper leaking caliper bolt |1.1.16 |b| |i|| | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Handlebar restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Front Brake performance not tested |1.2.1 |g|| | 1 |
| Rear Brake performance not tested |1.2.1 |g|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Brake master cylinder leaking anti-dive unit |1.1.10 |b| |ii|| | 1 |
| Nearside Rear Exhaust silencer likely to become detached clamp missing and joint leaking (8.1.1 (b) (ii)) | 1 |
| Offside Front Brake locking device insecure |3.2.A1e| | 1 |
| Front Fairings insecure and likely to impede the steering mudguard |2.1.2e| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Horn not loud enough to be heard by another road user |1.6.2b| | 1 |
| Offside Rear Wheel nut|s| loose |4.2.A.1e| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Rear Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. anti dive seized |2.3.6b| | 1 |
| Nearside Front Lower Front suspension assembly component missing |2.3.1| | 1 |
| Offside Front Lower Front suspension assembly component missing |2.3.1| | 1 |
| Nearside Rear Exhaust mounting missing |7.1.1c| | 1 |
| Hazard warning switch faulty |1.4.B.1d| | 1 |
| Nearside Rear Stop lamp not working |1.2.1b| | 1 |
| Anti-lock braking system warning lamp does not illuminate |3.4.1b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. anti dive valve seized |2.3.6b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Throttle operating incorrectly sticking slightly |6.2.1f| | 1 |
| Horn not working |1.7.3a| | 1 |
| Parking brake lever defective so that it cannot be satisfactorily operated |1.1.6 |d|| | 1 |
| Front Valve stem seriously damaged |4.1.D.1e| | 1 |
| All position lamps not working with the ignition off |1.1.A.3b| | 1 |
| Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f| | 1 |
| Direction indicators not working |1.4.A.2c| | 1 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 1 |
| Nearside Headlamp not working on main beam |1.7.5a| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front position lamp|s| missing |1.1.A.3a| | 1 |
| Offside Front position lamp|s| missing |1.1.A.3a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Headlamp light source and lamp not compatible n/s and o/s (4.1.4 (c)) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. antidive valve siezed |2.3.6b| | 1 |
| Front Direction indicator affected by the operation of another lamp not going completely out |1.5.1c| | 1 |
| Offside Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Throttle operating incorrectly Throttle drum not free to return on opposite locks |6.2.1f| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Centre Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Service brake excessively binding both (1.2.1 (f)) | 1 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 1 |
| Stop lamp not working |1.2.1b| | 1 |
| Offside Rear Exhaust system not adequately supported broken |7.1.1| | 1 |
| Nearside Rear Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |