| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 30 |
| Registration plate issues | 25 |
| Rear reflector on motorcycle missing |1.4.1| | 20 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Horn not working |1.7.3a| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Headlamp aim beam image kick up to the offside |1.6| | 9 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front wheel bearings are excessively rough |2.3.5b| | 7 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| 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| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Registration plate lamp issues | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear 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 |
| Rear Exhaust has part of the system missing |7.1.1a| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Centre Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Offside Front Brake hose leaking fluid |3.2.B4| | 1 |
| Nearside Front Fuel system component leaking |7.2.1a| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Direction indicators flashing more than 120 times per minute all four |1.5.1c| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Offside Rear 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 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Upper Vehicle identification number incomplete (0.2 (b)) | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Upper Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Horn missing |1.7.1| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| An item not tested |Manual| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Drive belt guard insecure |6.2.1c| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Offside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Centre Front Drive chain worn to excess |6.2.1e| | 1 |
| Centre Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Nearside Rear Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Chain guard insecure |6.1.7 |i|| | 1 |
| Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Inner Front Upper Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Rear Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Inner Rear Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Front position lamp does not illuminate immediately when switched on front park light |1.1.3a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking Front top engine mounting. |6.1.1c| | 1 |
| Inner Front Upper Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Direction indicators not working all |1.5.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake caliper leaking and braking performance affected nipples on caliper loose (1.1.16 (b) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Centre Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Centre Front An item not tested |Manual| | 1 |
| Centre Rear An item not tested |Manual| | 1 |
| Centre Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Nearside Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Brake lever insecure brake to handle bar loose (1.1.2 (e) (i)) | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Lower Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Fuel system component leaking fuel tap |6.1.3 |b| |i|| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Offside Front Brake disc contaminated oil from fork seal (1.1.14 (b)) | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Centre Rear Upper Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |