| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 56 |
| Headlamp aim beam image kick up to the offside |1.6| | 25 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 22 |
| Registration plate issues | 19 |
| Drive chain excessively loose |6.2.1d| | 17 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 7 |
| Registration plate lamp issues | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Horn not working |1.7.3a| | 4 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Chain guard insecure |6.2.1c| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Brake hose which buldges |3.2.B4| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Rear Position lamp likely to become detached |4.2.1 |c| |ii|| | 1 |
| Steering operation restricted in free movement from lock to lock hitting wire loom on nearside |2.1.4 |c|| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen on offside (4.1.2 (a)) | 1 |
| Rear Brake pedal anti-slip provision missing (1.1.2 (c)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Centre Rear Upper Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Brake caliper insecure both calliper and torque arm bolts loose |1.1.16 |c| |i|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Suspension component pin or bush excessively worn Rear shock, frame linkage bush/bearing (5.3.4 (a) (i)) | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Rear Chain guard insecure |6.2.1c| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Inner Rear Fuel hose leaking |7.2.1a| | 1 |
| Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Front Brake cylinder severely corroded |3.2.B1b| | 1 |
| Offside Front Brake cylinder severely corroded |3.2.B1b| | 1 |
| Rear Brake cylinder severely corroded |3.2.B1b| | 1 |
| Nearside Front Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Offside Front Shock absorber has a serious fluid leak fork seal |5.3.2 |b|| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Nearside Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Direction indicators not working REPLACED BULB |1.5.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Footrest missing |6.2.1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Centre Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear All direction indicators obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front All position lamps not working |4.2.1 |a|| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Brake disc significantly and obviously worn Discs below minimum thickness of 3.5mm (measures 3.09mm) (1.1.14 (a) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Brake disc significantly and obviously worn Disc below minimum thickness of 4.0mm (measures 3.15mm) (1.1.14 (a) (i)) | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Nearside Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Front suspension assembly has an insecure fork brace |2.3.4d| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Offside Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Offside Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen RIGHT HAND DIP HEADLIGHT, TAPED DURING TEST (4.1.2 (a)) | 1 |
| Offside Front Footrest insecure TIGHTENED DURING TEST (6.2.12 (a)) | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Nearside Footrest insecure (6.2.12 (a)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working front and rear (4.3.1 (a) (ii)) | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 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 |
| Offside Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect Headlamp masked to correct beam image. (4.1.2 (c)) | 1 |
| Nearside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Lower Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Stop lamp not working Light not operating when brake applied. (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies brake |1.3.1a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure brake arm bolt insecure |6.1.1 |b| |i|| | 1 |
| Nearside Front Handlebar deformed |2.1.1b| | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front An item not tested |Manual| | 1 |
| Rear Brake component is excessively corroded |3.1.5| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Rear Chain guard insecure |6.1.7 |i|| | 1 |
| Nearside Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |