| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 27 |
| Rear reflector on motorcycle missing |1.4.1| | 21 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 20 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 20 |
| Registration plate issues | 18 |
| Steering headbearing has excessive free play |2.2.2| | 11 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Horn not working |1.7.3a| | 10 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 9 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 7 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front position lamp missing |1.1.1a| | 2 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Front Front position lamp damaged and function impaired |1.1.1b| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| 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 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Locking device(s) not correctly fitted which may make the motor bicycle dangerous to ride (6.2.1h) | 2 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Brake hose damaged | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Offside Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Upper Front suspension assembly component loose |2.3.1| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Position lamp adversely affected by the operation of another lamp Headlamp effected by other electric components , will switch off when using horn or indicators |4.2.3 |b|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Horn is not continous or uniform |1.7.3c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Handlebar so insecure it is likely to become detached top yoke securing bolts missing |2.2.1 |b| |ii|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Central Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Front Brake disc|s| insecure Collet missing |3.2.A1g| | 1 |
| Rear suspension bush has excessive free play Front bottom |2.4.A2a|i|| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear Lower Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Lower Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Lower Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Rear Lower Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Nearside Rear Lower Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Front Upper Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Offside Front Upper Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Nearside Front Upper Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Offside Front Upper Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Centre Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced 2 front frame bolts very loose, tightened up (6.1.1 (b) (ii)) | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear suspension component cracked |2.4.A.1a| | 1 |
| Rear 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 |
| Rear Brake hose leaking fluid front banjo |3.2.B4| | 1 |
| Brake locking device insecure rear brake linkage clevis pin split pin missing |3.2.A1e| | 1 |
| Lower Rear mono-shock insecure link bolt insecure and locking devise not effective |2.4.B.4| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Nearside Front Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front An item not tested |Manual| | 1 |
| Brake locking device insecure Rear master cylinder plunger to lever |3.2.A1e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket bolts loose |6.2.1h| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Brake component leaking fluid |3.2.B4| | 1 |
| Offside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Offside Front Upper Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Front Brake excessively binding Striped new fluid 5.1 at time of test |1.2.1 |f|| | 1 |
| Central Front Steering headbearing excessively stiff or notchy New top and bottom bearings fitted |2.2.2 |f| |i|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Front wheel bearings have excessive free play (2.3.5b) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Offside Rear Brake reaction bracket insecure (3.2.A1j) | 1 |
| Fuel cap does not fasten securely by a positive means (7.2.2b) | 1 |
| Drive chain excessively loose (6.2.1d) | 1 |
| Front Headlamp aim beam image kick-up is to the offside (1.6.1) | 1 |
| Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Nearside Front Front suspension assembly component cracked |2.3.1| | 1 |
| Nearside Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Offside Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Front Upper Brake hose excessively twisted |3.2.B3a| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Offside Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Brake lever cracked |3.1.2c| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Brake hose connection leaking |1.1.12 |c|| | 1 |
| Offside Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |