| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 46 |
| Rear reflector on motorcycle missing |1.4.1| | 46 |
| Registration plate issues | 44 |
| Registration plate lamp issues | 23 |
| Horn not working |1.7.3a| | 21 |
| Rear reflector missing (4.8.2 (a) (ii)) | 15 |
| Horn not working (7.7 (a)) | 13 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 5 |
| Nearside Rear Direction indicator not working |1.5.1c| | 5 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| 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| | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| 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)) | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Front Horn not working (7.7 (a)) | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Offside Front Footrest insecure (6.2.12 (a)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Direction indicator obviously incorrectly positioned both rear incorrectly spaced (4.4.3 (a)) | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Lower Rear mono-shock insecure |2.4.B.4| | 1 |
| Nearside Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear reflector missing PRS -Replaced (4.8.2 (a) (ii)) | 1 |
| Headlamp aim not tested due to no low beam (4.1.2 (b)) | 1 |
| Rear Direction indicator obviously incorrectly positioned built in to rear tail light (4.4.3 (a)) | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Upper Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Central Front Upper Position lamp not working (4.2.1 (a)) | 1 |
| Central Front Upper Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Stop lamp missing |4.3.1 |a| |ii|| | 1 |
| Rear 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|| | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Offside Front Lower Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Central Rear Lower Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Footrest insecure (6.2.12 (a)) | 1 |
| Nearside Front Suspension component fractured Fork leg where wheel spindle is secured (5.3.3 (b) (ii)) | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Exhaust has a major leak of exhaust gases Rear down pipe gasket (6.1.2 (a)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Headlamp aim projected beam image obviously incorrect LOW BEAM (4.1.2 (c)) | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Offside Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Upper Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Offside Front Upper Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Shock absorber has a serious fluid leak R/H fork leg (5.3.2 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Brake lining(s) incorrectly mounted (1.1.13 (c)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Brake hose damaged | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Central Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Handlebar handgrip not secure to handlebars. l/h |2.1.1c| | 1 |
| Nearside Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Throttle operating incorrectly sticking (6.2.7 (a) (i)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen both |4.1.2 |a|| | 1 |
| Offside Footrest insecure (6.2.12 (a)) | 1 |
| Rear Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Lower Front suspension assembly component cracked |2.3.1| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Brake disc fractured disc cracked in varius places o/s/f (1.1.14 (a) (ii)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Rear Lower Suspension arm pin or bush excessively worn Front pin excessively worn (5.3.4 (a) (i)) | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 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 |
| Nearside Headlamp insecure |1.2.3b| | 1 |
| Offside Headlamp insecure |1.2.3b| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Offside Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Lower Steering lock stop missing |2.1.3| | 1 |
| Front Lower Fork yoke deformed |2.1.1b| | 1 |
| Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Front Shock absorber has a serious fluid leak oil leak (5.3.2 (b)) | 1 |
| Offside Front Upper Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Shock absorber has a serious fluid leak Also damage to fork leg surface (5.3.2 (b)) | 1 |
| Nearside Front Direction indicator obscured |1.5.1a| | 1 |
| Offside Front Direction indicator obscured |1.5.1a| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Shock absorber has a serious fluid leak both (5.3.2 (b)) | 1 |
| Centre Rear Upper Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Drive chain sprocket carrier worn to excess bearing has play |6.2.1e| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Front Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Stop lamp switch with a delay in operation brake pedal (4.3.2 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls switch (4.3.2 (a) (iii)) | 1 |
| Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Offside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Stop lamp does not illuminate immediately a brake applies front lever |1.3.1a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp aim projected beam image obviously incorrect bulb in wrong (4.1.2 (c)) | 1 |
| Lower Exhaust mounting missing |7.1.1c| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |