| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 32 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 21 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 20 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 18 |
| Steering headbearing has excessive free play |2.2.2| | 16 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 14 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 14 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 13 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 11 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Registration plate issues | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 9 |
| Headlamp insecure |1.2.3b| | 8 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Horn not working |1.7.3a| | 6 |
| 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| | 6 |
| Handlebar mounting clamp loose |2.1.1a| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Offside Rear Direction indicator insecure |1.5.3b| | 5 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 5 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 4 |
| Headlamp aim not tested |1.6| | 4 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear Brake lever mounting insecure |3.1.2a| | 4 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 4 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Offside Rear Direction indicator missing |1.5.1a| | 3 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Front Direction indicator insecure |1.5.3b| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Front Fork yoke deformed |2.1.1b| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Offside Rear Lower Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Motorcycle structure excessively damaged |6.1.1a| | 2 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front suspension assembly component excessively bent |2.3.1| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear Brake lagging in operation (1.2.1 (d)) | 2 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Horn sounds harsh or grating |1.7.3c| | 2 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Rear Brake lever insecure |3.1.2a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Handlebar deformed |2.1.1b| | 2 |
| Nearside Brake lever insecure |3.1.2a| | 2 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Front position lamp insecure |1.1.1c| | 2 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Steering lock stop maladjusted |2.1.3| | 1 |
| Front Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Offside Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Nearside Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake master cylinder severely damaged |3.2.B1b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Centre Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Centre Rear Lower Motorcycle structure cracked |6.1.1a| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Nearside Rear Brake linkage has abnormal movement due to maladjustment ADJUST REAR BRAKE LINKAGE |3.2.A1i| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Front Upper Steering linkage has excessive free play |2.2.2| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Motorcycle structure excessively corroded main frame |6.1.1a| | 1 |
| Centre Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Nearside Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Centre Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Central Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Nearside Front Shock absorber missing |5.3.2 |a| |ii|| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Offside Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Centre Front Upper Motorcycle structure cracked |6.1.1a| | 1 |
| Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Brake lever mounting insecure |3.1.2a| | 1 |
| Rear Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Nearside Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Stop lamp remains on when the brake is released front brake leaver |1.3.1e| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Position lamp likely to become detached (4.2.1 (c) (ii)) | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Brake lever attachment screws loose |3.1.2b| | 1 |
| Nearside Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Nearside Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Vehicle identification number not permanently displayed |6.3.5a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn emits 2 or more alternating tones |1.7.3b| | 1 |
| Offside Exhaust mounting missing |7.1.1c| | 1 |
| Rear All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Front Brake lever insecure |3.1.2a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Centre Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |