| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 39 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 21 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 18 |
| Registration plate lamp issues | 13 |
| Parking brake: efficiency below requirements |3.7.B.7| | 11 |
| Registration plate issues | 10 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 8 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Nearside Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 3 |
| Nearside Front Direction indicator not working |1.4.A.2c| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 2 |
| Headlamp not working on dipped beam |1.7.5a| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Offside Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Parking brake lever has excessive movement indicating incorrect adjustment (1.1.6 (c)) | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Horn not working |1.7.3a| | 2 |
| Position lamp switch does not operate in accordance with the requirements (4.2.2 (a)) | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 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 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Steering lock stop missing |2.1.3| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Offside Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Nearside Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Exhaust has a major leak of exhaust gases rear |6.1.2 |a|| | 1 |
| Rear Brake disc contaminated contaminated with oil |1.1.14 |b|| | 1 |
| Rear Service brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Parking brake lever defective so that it cannot be satisfactorily operated |3.1.3c| | 1 |
| Nearside Stop lamp not working |1.2.1b| | 1 |
| Nearside Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Offside Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Stop lamp does not emit a steady light front brake light switch not working |1.3.1b| | 1 |
| Steering lock stop ineffective a restriction on right hand steering |2.1.3| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Front suspension locking device ineffective |2.5.A.4| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear brake caliper securing device excessively deteriorated parkbrake caliper where mounted to engine/hub casing, casing is cracked through. |3.5.1j| | 1 |
| Rear Service brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Engine mounting/bracket bracket damaged or deteriorated resulting in excessive movement rear engine management bushes worn (6.1.8 (a) (i)) | 1 |
| Offside Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Nearside Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Rear Stop lamp showing white light to the rear (4.3.3 (a) (ii)) | 1 |
| Offside Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Nearside Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Electronic power steering warning lamp indicates a system malfunction (2.6 (a)) | 1 |
| Parking brake lever inoperative (1.1.6 (d)) | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front position lamp|s| not working |1.1.A.3b| | 1 |
| Nearside Stop lamp emits other than a steady red light |1.2.1e| | 1 |
| Offside Drag link end ball joint has excessive play |2.2.B.1f| | 1 |
| Steering component deformed and unserviceable Handle bars and wheels not in line. |2.2.C.1d| | 1 |
| rear brake recording little or no effort |3.7.B.5a| | 1 |
| Rear Stop lamp not working |1.2.1b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Nearside Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment insufficient reserve travel (1.1.15 (f)) | 1 |
| Offside Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Brake cable guide defective and affecting operation Hand brake cable |1.1.15 |d|| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Brake fluid not visible (1.1.10 (d) (iii)) | 1 |
| Offside Rear Upper Shock absorber likely to become detached (5.3.2 (a) (ii)) | 1 |
| Offside Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Stop lamp showing white light to the rear |4.3.3 |a| |ii|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Brake locking device missing pad pin |3.2.A1e| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Offside Front Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Offside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Nearside Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear suspension component cracked nearside shock adjuster ring |2.4.A.1a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Stop lamp does not illuminate immediately a brake applies faulty front brake stop light switch |1.3.1a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working Not working from front brake control. (4.3.1 (a) (ii)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Rear Brake has no recorded effort at a wheel Rear Handbrake not holding vehicle. |1.2.1 |a| |ii|| | 1 |
| Stop lamp(s) emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Rear Stop lamp not working not working on front brake (4.3.1 (a) (ii)) | 1 |
| Front Steering headbearing has excessive wear or free play left side fork leg |2.2.2 |f| |i|| | 1 |
| Front Steering headbearing has excessive wear or free play right side fork leg |2.2.2 |f| |i|| | 1 |
| Handlebar grip insecure to handlebar left side |2.2.1 |d| |ii|| | 1 |
| Handlebar grip insecure to handlebar right side |2.2.1 |d| |ii|| | 1 |
| Offside Front wheel has a missing wheel bolt|s| |4.2.3a| | 1 |
| Throttle operating incorrectly grip not secure |6.2.1f| | 1 |
| Rear suspension bush has excessive free play engine mounts |2.4.A2a|i|| | 1 |
| Stop lamp(s) showing white light to the rear (4.3.3 (a) (ii)) | 1 |
| Rear Parking brake efficiency below requirements |1.4.2 |a| |i|| | 1 |
| Offside Position lamp not working |4.2.1 |a|| | 1 |
| Offside Stop lamp|s| not working |4.3.1 |a| |ii|| | 1 |
| Nearside Stop lamp|s| showing white light to the rear |4.3.3 |a| |ii|| | 1 |
| Rear Stop lamp emits other than a steady red light x2 |1.2.1e| | 1 |
| Nearside Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Rear suspension bearing has excessive free play Engine mounts |2.4.A2a|i|| | 1 |
| Front Position lamp not working Both Sides (4.2.1 (a) (ii)) | 1 |
| Headlamp not working on main beam |1.7.5a| | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Brake pedal anti-slip provision missing |3.3.A.1b| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 1 |
| Offside Front Track rod end ball joint has excessive play (2.1.3 (b) (i)) | 1 |
| Service brake efficiency less than 50% of the required value (1.2.2 (a) (ii)) | 1 |
| Hazard warning switch faulty |1.4.B.1d| | 1 |
| Parking brake lever has no reserve travel cable snapped |3.1.6b| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Central Front Upper Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Central Front Upper Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Lower Suspension arm has an unsafe modification (5.3.3 (c) (i)) | 1 |
| Nearside Steering headbearing has excessive free play |2.2.2| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Upper Headlamp not working on main beam nsf headlamp too high (4.1.1 (a) (ii)) | 1 |
| Front Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| All direction indicators not working all indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Centre Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear suspension bush has excessive free play Engine bush |silent block| |2.4.A2a|i|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front suspension assembly excessive wear or free play in a front suspension component movement in race bearings. |2.3.4| | 1 |
| Headlamp at least one does not illuminate on dipped beam dip beam does not stay illuminated. |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam main beam does not stay illuminated. |1.2.2a|ii|| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |