| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 11 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 7 |
| Front Brake excessively binding (1.2.1 (f)) | 7 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 5 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Registration plate lamp issues | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Brake caliper insecure (1.1.16 (c) (i)) | 2 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Upper Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak fork leg (5.3.2 (b)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Shock absorber has a serious fluid leak both (5.3.2 (b)) | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Nearside Rear Stop lamp not working on application of rear brake (4.3.1 (a) (ii)) | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure rear mudguard fixing broken it is very loose and dangerous (6.1.1 (b) (i)) | 1 |
| Nearside Rear Direction indicator incorrect colour white (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator incorrect colour white (4.4.3 (a)) | 1 |
| Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear reflector missing Under L-plate (4.8.2 (a) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Brake caliper inadequately mounted Touching Exhaust Baffle (1.1.16 (c) (i)) | 1 |
| Offside Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Rear Motorcycle structure is deformed and structural rigidity is significantly reduced (6.1.1 (a) (i)) | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced (6.1.1 (b) (ii)) | 1 |
| Nearside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Rear Lower Shock absorber insecurely attached No Nut fitted (5.3.2 (a) (i)) | 1 |
| Offside Rear Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Rear Brake caliper inadequately mounted (1.1.16 (c) (i)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls rear brake light not working (4.3.2 (a) (iii)) | 1 |
| Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced exhaust/ rear-wheel support loose (6.1.1 (b) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure Handel bars loose (6.1.1 (b) (i)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Central Front Lower Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Front Lower Brake excessively binding (1.2.1 (f)) | 1 |
| Exhaust silencer insecure cracked (8.1.1 (b) (i)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Rear Brake caliper operating mechanism has excessive travel Worn slide pins (1.1.16 (e) (i)) | 1 |
| Fuel cap ineffective Rubber seal perished (6.1.3 (b) (i)) | 1 |
| Front Headlamp light intensity severely reduced lens reflective covering not reflective. (4.1.4 (a)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak Fork seal (5.3.2 (b)) | 1 |
| Stop lamp not working rear switch (4.3.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake hose damaged and likely to fail (1.1.12 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect o/s shock wet (5.3.2 (b)) | 1 |
| Nearside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake performance not tested brakes are metal to metal (1.2.1 (g)) | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced bolt broken & missing (6.1.1 (b) (ii)) | 1 |
| Front Outer Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Outer Brake disc contaminated (1.1.14 (b)) | 1 |
| Brake performance unable to be tested (1.2.1 (g)) | 1 |
| Dipswitch does not operate immediately when selected on main beam could be switch (4.1.3 (b)) | 1 |
| Front Steering linkage insecure to the extent there is excessive movement at the mountings excessive play in headstock bearings (2.1.3 (a) (ii)) | 1 |