| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 47 |
| Steering headbearing has excessive free play |2.2.2| | 25 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 11 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Registration plate lamp issues | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 6 |
| Registration plate issues | 6 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 6 |
| Horn not working |1.7.3a| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 5 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 4 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 4 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 4 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Indicator switch defective |1.5.4| | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Horn not working |7.7 |a| |ii|| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Front Position lamp not working |4.2.1 |a|| | 3 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 3 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies Brake lamp does not iluminate with rear application |1.3.1a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Rear Brake lining|s| less than 1.0 mm thick |1.1.13 |a|| | 2 |
| Front position lamp missing |1.1.1a| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Brake cylinder insecure |1.1.16 |c| |i|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Brake hose excessively deteriorated | 2 |
| Nearside Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Offside Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Front Brake reaction bracket insecure |3.2.A1j| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Upper Shock absorber has an excessively worn bush |5.3.2 |c|| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 2 |
| Nearside Front All direction indicators not working |4.4.1 |a| |ii|| | 2 |
| Front Brake master cylinder leaking |1.1.10 |b| |ii|| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Riders seat insecure |6.2.5 |a| |ii|| | 2 |
| Nearside Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Brake lever mounting cracked |3.1.2c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| All position lamps not working front and rear (4.2.1 (a)) | 1 |
| Offside All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Rear Brake caliper has no reserve travel and braking performance affected (1.1.16 (e) (ii)) | 1 |
| Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Brake hose damaged | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear reflector on motorcycle obscured Covered by L plate. |1.4.2b| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake |1.3.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork (5.3.2 (b)) | 1 |
| Rear Direction indicator incorrect colour both showing white light (4.4.3 (a)) | 1 |
| Exhaust has a major leak of exhaust gases gasket leaking (6.1.2 (a)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Indicator switch defective |1.5.4| | 1 |
| Front Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front Brake reaction bracket excessively worn |1.1.15 |b|| | 1 |
| Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Front mudguard can easily contact any fixed point of the motor bicycle. |2.3.7| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Horn missing |1.7.1| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Centre Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort rear brake needed adjusting |3.3.A1c| | 1 |
| Brake cable excessively corroded rear |3.2.A1b| | 1 |
| Brake cable has a significantly damaged outer casing. rear |3.2.A1b| | 1 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Headlamp missing |1.2.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Stop lamp does not emit a steady light front brake swith |1.3.1b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Front Brake master cylinder leaking level window cracked |1.1.10 |b| |ii|| | 1 |
| Stop lamp not working via front brake |4.3.1 |a| |ii|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on not working |1.1.3a| | 1 |
| Exhaust mounting does not fully support the exhaust system front pipe insecure |7.1.1.c| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component head bearings |2.3.4| | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment brake control has no reserve traval (1.1.15 (f)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Direction indicator incorrect colour All |1.5.1b| | 1 |
| Front Brake reaction bracket excessively worn Front brake caliper torque bar bushes have excessive movement. (1.1.15 (b)) | 1 |
| Headlamp aim projected beam image obviously incorrect Dip beam image. (4.1.2 (c)) | 1 |
| Front Brake reaction bracket excessively worn Front brake caliper reaction arm bushes have excessive wear and movement. (1.1.15 (b)) | 1 |
| Headlamp lens seriously defective Lens incorrectly to headlamp. (4.1.1 (b) (ii)) | 1 |
| Brake master cylinder defective but brake still operating window broken/ sellotaped up (1.1.10 (b) (i)) | 1 |
| Valve stem seriously damaged both (5.2.3 (j)) | 1 |
| Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Rear Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Stop lamp not working front brake |4.3.1 |a| |ii|| | 1 |
| Front Exhaust is leaking and excessively noisey Head to downpipe Gasket? |7.1.1b| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies stop light inop when front brake applied |1.3.1a| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Offside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Front Brake master cylinder defective but brake still operating |1.1.10 |b| |i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake light switch |1.3.1a| | 1 |
| Upper Rear suspension bush has excessive free play shock bush |2.4.A2a|i|| | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level sight glass broken (1.1.10 (d) (ii)) | 1 |
| Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Nearside Front Brake caliper operating mechanism has excessive travel Caliper Bush worn (1.1.16 (e) (i)) | 1 |
| Offside Front Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Direction indicator incorrect colour nearside & offside rear (4.4.3 (a)) | 1 |
| Suspension component pin or bush excessively worn engine to frame bracket bushes (5.3.4 (a) (i)) | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment Rear brake hub lever pinch bolt missing (1.1.15 (f)) | 1 |
| Rear Stop lamp not working Break light staying on (4.3.1 (a) (ii)) | 1 |
| Front All direction indicators obviously incorrectly positioned Distance of separation to small 180mm (4.4.3 (a)) | 1 |
| Handlebar retaining device loose |2.2.1 |b| |i|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment |1.1.15 |f|| | 1 |
| Front Fork yoke deformed |2.1.1b| | 1 |
| Nearside Front Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake hose leaking (1.1.12 (c)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected tickover very high (6.2.7 (a) (ii)) | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Direction indicators flashing less than 60 times a minute all indicators |1.5.1c| | 1 |
| Direction indicators affected by the operation of another lamp All Indicators Affected |1.5.1c| | 1 |
| Direction indicators not working all |1.5.1c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Lower Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies Rear control |1.3.1a| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Direction indicator not working all lamps not flashing |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| All direction indicators not working all stuck on (4.4.1 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Central Rear Lower Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Direction indicator flashing less than 60 times a minute all |1.5.1c| | 1 |
| Upper Rear suspension bush has excessive free play shock |2.4.A2a|i|| | 1 |
| Central Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Central Front Upper Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Valve stem seriously misaligned (5.2.3 (j)) | 1 |