| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 11 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 8 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 6 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 5 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 5 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 4 |
| Horn not working |7.7 |a| |ii|| | 4 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 3 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Headlamp lens seriously defective |4.1.1 |b| |ii|| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment |1.1.15 |f|| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Nearside Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Horn not working |1.7.3a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Headlamp light source and lamp not compatible Not showing correct beam type for headlamp aim setting. |4.1.4 |c|| | 1 |
| Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Riders seat with a defective supporting structure (6.2.5 (a) (i)) | 1 |
| Horn not working sticks on and intermittently inoperative (7.7 (a)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Valve stem seriously damaged front and rear valves cracked |5.2.3 |j|| | 1 |
| Nearside Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake cable guide defective and affecting operation (1.1.15 (d)) | 1 |
| Registration plate issues | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Brake lever has insufficient reserve travel rear system (1.1.2 (a)) | 1 |
| Front Brake master cylinder leaking |1.1.10 |b| |ii|| | 1 |
| Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Front Brake linkage excessively worn |1.1.15 |b|| | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment |1.1.15 |f|| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Brake lever has insufficient reserve travel Reaching bar. |1.1.2 |a|| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake lever pivot has excessive free play |1.1.1 |b|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Footrest insecure |6.2.12 |a|| | 1 |
| Offside Footrest insecure |6.2.12 |a|| | 1 |
| Exhaust has a major leak of exhaust gases front (6.1.2 (a)) | 1 |
| Front Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 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%. |3.3.A2b| | 1 |
| Stop lamp not working both front & rear (4.3.1 (a) (ii)) | 1 |
| Front Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Central Suspension arm pin or bush excessively worn swing arm bush (5.3.4 (a) (i)) | 1 |
| Rear Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Brake master cylinder defective but brake still operating |1.1.10 |b| |i|| | 1 |
| Offside Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment brake pulling into bars |1.1.15 |f|| | 1 |
| All direction indicators not working not flashing |4.4.1 |a| |ii|| | 1 |
| Nearside Brake lever has insufficient reserve travel rear brake (1.1.2 (a)) | 1 |
| Offside Brake lever has insufficient reserve travel front brake (1.1.2 (a)) | 1 |
| Nearside Brake lever attachment screws missing |3.1.2b| | 1 |
| Nearside Front Brake lever has insufficient reserve travel not enough reserve movement on rear brake adjusted (1.1.2 (a)) | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Position lamp not working |4.2.1 |a|| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Front Brake reaction bracket excessively worn Lower bush |1.1.15 |b|| | 1 |
| Roller brake test No brake control achieves an efficiency of 30% |1.2.2 |a| |i|| | 1 |
| Brake fluid reservoir fluid not visible |1.1.10 |d| |iii|| | 1 |
| Brake master cylinder leaking inspection window broken |1.1.10 |b| |ii|| | 1 |
| Brake hose damaged | 1 |
| Rear Position lamp likely to become detached |4.2.1 |c| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Brake lever insecure |1.1.2 |e| |i|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake caliper inadequately mounted |1.1.16 |c| |i|| | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front All position lamps not working |4.2.1 |a|| | 1 |
| Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Rear Brake lever pivot excessively worn (1.1.1 (b)) | 1 |
| Stop lamp not working front brake |4.3.1 |a| |ii|| | 1 |
| Fuel hose leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Lower Fuel hose leaking (6.1.3 (b) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Brake fluid reservoir fluid not visible Brake fluid reservoir leaking fluid through site glass |1.1.10 |d| |iii|| | 1 |
| Front Brake reaction bracket excessively worn |1.1.15 |b|| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Headlamp reflector seriously defective |4.1.1 |b| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Exhaust has a major leak of exhaust gases front pipe to head (6.1.2 (a)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Stop lamp not working Front |right hand| switch |4.3.1 |a| |ii|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Front Valve stem seriously damaged valve split when checking |5.2.3 |j|| | 1 |
| Front Brake linkage excessively worn (1.1.15 (b)) | 1 |
| Front Brake cylinder damaged Sight glass cracked (1.1.16 (a) (i)) | 1 |
| Rear Brake lever has insufficient reserve travel Adjusted (1.1.2 (a)) | 1 |
| Rear Wheel excessively distorted |5.2.2 |c| |i|| | 1 |
| Front Brake hose excessively damaged (1.1.12 (b) (ii)) | 1 |
| Nearside Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Brake caliper inadequately mounted and braking performance affected |1.1.16 |c| |ii|| | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock cables fouling |2.1.4 |a|| | 1 |
| Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |