| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 86 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 35 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 32 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 21 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 20 |
| Steering headbearing has excessive free play |2.2.2| | 16 |
| Riders seat insecure |6.2.1a| | 15 |
| Horn not working |1.7.3a| | 12 |
| Exhaust excessively deteriorated |7.1.1a| | 11 |
| Registration plate issues | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Headlamp insecure |1.2.3b| | 9 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 6 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Fuel cap sealing washer missing |7.2.2c| | 5 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 3 |
| Direction indicator not working |1.5.1c| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| 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| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Brake hose damaged | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 2 |
| Horn not working (1.7.3a) | 2 |
| Fuel cap sealing washer missing (7.2.2c) | 2 |
| Rear Brake lever has inadequate reserve travel (3.1.3b) | 2 |
| Rear reflector on motorcycle missing (1.4.1) | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake lever attachment screws loose |3.1.2b| | 1 |
| Centre Front Lower Front wheel has a loose wheel stud|s| |4.2.3a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Offside Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort Self servo effect |3.3.A1c| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Brake lever is inoperative |3.1.3c| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Rear Exhaust system insecure (6.1.2 (a)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Brake drum contaminated (1.1.14 (b)) | 1 |
| Roller brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Nearside Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Nearside Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Suspension component pin or bush excessively worn swing arm assembly (5.3.4 (a) (i)) | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| An item not tested |Manual| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Wheel alignment incorrect which adversely affects the handling FRONT FORK ASSY |2.5.1| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Rear Riders seat insecure |6.2.1a| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Fuel cap missing |7.2.2a| | 1 |
| Direction indicators not working offside front |1.5.1c| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Shock absorber likely to become detached BOTH FRONT (5.3.2 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Nearside Front Steering lock stop missing |2.1.3| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp switch faulty highbeam = low beam---low beam = high beam |1.2.4| | 1 |
| Front Brake hose damaged and likely to fail |1.1.12 |a|| | 1 |
| Nearside Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Brake drum significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Rear Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Rear Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Brake component leaking fluid |3.2.B4| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Nearside Stop lamp missing |1.3.3a| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Offside Front Direction indicator obscured |1.5.1a| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Stop lamp not working lever (4.3.1 (a) (ii)) | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Fuel cap ineffective seal missing (6.1.3 (b) (i)) | 1 |
| Steering headbearing has excessive free play UNDER LOAD (2.2.2) | 1 |
| Steering movement excessively notchy with the wheel raised (2.2.1b) | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Nearside Upper Front suspension assembly excessive wear or free play in a front suspension component linkage bush |2.3.4| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Exhaust excessively deteriorated rotted through |7.1.1a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Stop lamp not working from front control (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator obscured |1.5.1a| | 1 |
| Offside Rear Direction indicator obscured |1.5.1a| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 1 |
| Headlamp at least one does not illuminate on main beam (1.2.2a(ii)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Central Rear Stop lamp lens defective such that the emitted light is adversely affected return spring week |4.3.1 |b| |ii|| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Offside Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |