| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 29 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Registration plate issues | 11 |
| Rear Position lamp not working (4.2.1 (a)) | 10 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 9 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 9 |
| Front Brake excessively binding (1.2.1 (f)) | 8 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 7 |
| Horn sound not in accordance with requirements (7.7 (c)) | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 6 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 5 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Position lamp not working (4.2.1 (a)) | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 5 |
| All direction indicators not working (4.4.1 (a) (ii)) | 5 |
| Horn not working (7.7 (a)) | 4 |
| Offside Front Direction indicators not working |1.5.1c| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 3 |
| Front Position lamp not working |4.2.1 |a|| | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| All position lamps not working (4.2.1 (a)) | 2 |
| Rear suspension component loose |2.4.A.1a| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Horn sounds harsh or grating |1.7.3c| | 2 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 2 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 2 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 2 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Front Horn not working (7.7 (a)) | 1 |
| Rear Wheel fixing missing (multiple fixings) One of the rear wheel bolts are missing (5.2.1 (a) (i)) | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls Brake lever. (4.3.2 (a) (iii)) | 1 |
| Front Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Central Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Wheel has loose rivet/s or bolts (5.2.2 (e) (i)) | 1 |
| Rear wheel bearings have excessive free play wheel may be loose |2.4.A.2c| | 1 |
| Central Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Central Front Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Position lamp showing white light to the rear |4.2.3 |a| |ii|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake lever has insufficient reserve travel Adjusted. |1.1.2 |a|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Handlebar mounting so insecure that steering is adversely affected |2.2.1 |a| |ii|| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls Offside switch faulty (4.3.2 (a) (iii)) | 1 |
| Offside Stop lamp not working hand control (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies Wire off switch |1.3.1a| | 1 |
| Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Brake cylinder leaking front reservoir (1.1.16 (b) (i)) | 1 |
| Nearside Front Stop lamp not working lever (4.3.1 (a) (ii)) | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected Throttle sticking (6.2.7 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Stop lamp not working front lever stop lamp inop |4.3.1 |a| |ii|| | 1 |
| Exhaust silencer insecure entire muffler loose and touching chassis |8.1.1 |b| |i|| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Offside Front Outer Stop lamp does not emit a steady light brake control 1 |1.3.1b| | 1 |
| Nearside Rear Outer Direction indicators not working |1.5.1c| | 1 |
| Central Front Outer All position lamps adversely affected by the operation of the horn effected by indicator operation |1.1.3b| | 1 |
| Central Rear Outer All position lamps adversely affected by the operation of another lamp effected by indicator |1.1.3b| | 1 |
| Central Front Outer Headlamp dipped beam affected by the operation of another lamp effected by indicator n/s |1.2.2c| | 1 |
| Central Front Outer Headlamp main beam affected by the operation of another lamp effected by indicator n/s |1.2.2c| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake fluid reservoir fluid not visible over full |1.1.10 |d| |iii|| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Offside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Brake drum contaminated |1.1.14 |b|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Stop lamp not working Not working with lever (4.3.1 (a) (ii)) | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front lever (4.3.2 (a) (iii)) | 1 |
| Front Wheel damaged or distorted to the extent that control of the motorcycle is likely to be adversely affected wheel not located on hub face causing excessive run out (5.2.2 (c) (ii)) | 1 |
| Brake performance unable to be tested brake test not carried out due to road wheel condition (1.2.1 (g)) | 1 |
| Front Suspension arm pin or bush excessively worn shock pivot arm (5.3.4 (a) (i)) | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Headlamp missing (4.1.1 (a) (ii)) | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Headlamp main beam affected by the operation of another lamp horn |1.2.2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front brake |1.3.1a| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Nearside Rear Lower Direction indicators not working |1.5.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Brake performance not tested (1.2.1 (g)) | 1 |
| Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Exhaust silencer insecure (8.1.1 (b) (i)) | 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 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp not working with front brake lever |4.3.1 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Direction indicators not working not flashing on and off |1.5.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front brake operated |1.3.1a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp not working front switch innop (4.3.1 (a) (ii)) | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front and rear brake lights not working (4.3.2 (a) (iii)) | 1 |
| Registration plate lamp issues | 1 |
| Offside Rear Lower Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake drum significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp dipped beam affected by the operation of another lamp spotlight obscuring image |1.2.2c| | 1 |
| Front Brake lagging in operation (1.2.1 (d)) | 1 |
| Engine mounting/bracket bracket missing Lock nut missing |6.1.8 |a| |ii|| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Wheel spoke excessively bent Buckled (5.2.2 (d)) | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake hose connection leaking (1.1.12 (c)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Front Brake lever has inadequate reserve travel lever fouls handlebar |3.1.3b| | 1 |
| Offside Front Upper Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Stop lamp not working Rear Control (4.3.1 (a) (ii)) | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 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 operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 1 |
| Rear Brake cable knotted (1.1.15 (a)) | 1 |
| Fuel tank leaking excessively or a risk of fire (6.1.3 (b) (ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies Offside lever |1.3.1a| | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Front Wheel fixing loose (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Nearside Rear Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Rear Brake linkage has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |