| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 12 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 10 |
| Stop lamp remains on when the brake is released |1.3.1e| | 8 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Horn not working |1.7.3a| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Registration plate issues | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 5 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Indicator switch defective |1.5.4| | 4 |
| Fuel cap sealing washer missing |7.2.2c| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Steering lock stop missing |2.1.3| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Offside Direction indicators not working |1.5.1c| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Headlamp aim not tested |4.1.2 |b|| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition not tested |8.1.1 |a|| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Brake lever insecure |3.1.2a| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake hose leaking fluid at caliper and corroded furrell |3.2.B4| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Brake hose fouling outer casing split |3.2.B3b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Handlebar handgrip not secure to handlebars. L/H |2.1.1c| | 1 |
| Front shock absorber seal failed and leaking oil R/H fork seal |2.3.3| | 1 |
| Brake lever has inadequate reserve travel Rear brake needs adjusting |3.1.3b| | 1 |
| Rear Stop lamp not working front switch |4.3.1 |a| |ii|| | 1 |
| Position lamp switch insecure switch gear loose. |4.2.2 |b|| | 1 |
| Front Brake hose damaged and likely to fail |1.1.12 |a|| | 1 |
| Rear shock absorber insecurely mounted Bottom nut missing |2.4.A.3b| | 1 |
| Exhaust mounting missing Manifold bolt missing |7.1.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Offside Indicator switch defective |1.5.4| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Registration plate lamp issues | 1 |
| Centre Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Centre Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Centre Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Rear Lower Direction indicators not working |1.5.1c| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system Exhaust joint broken |7.1.1.c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| An item not tested |Manual| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Handlebar mounting insecure |2.2.1 |a| |i|| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Indicator switch inoperative |4.4.2 |a| |ii|| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Upper Direction indicator not working |1.5.1c| | 1 |
| Offside Upper Direction indicator not working |1.5.1c| | 1 |
| Horn emits 2 or more alternating tones |1.7.3b| | 1 |
| 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 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Central Front Lower Shock absorber has a serious fluid leak fork seals leaking |5.3.2 |b|| | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Front Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Throttle operating incorrectly sticking open (6.2.7 (a) (i)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Stop lamp not working rear brake light not working on rear (hand) control (4.3.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Shock absorber has a serious fluid leak fork seals (5.3.2 (b)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Rear Brake lever insecure left hand switch lever holder insecure loose (1.1.2 (e) (i)) | 1 |
| Nearside All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |