| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 44 |
| Headlamp aim out of alignment | 29 |
| Steering headbearing has excessive free play |2.2.2| | 23 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 19 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Registration plate issues | 15 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 14 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Stop lamp remains on when the brake is released |1.3.1e| | 9 |
| Stop lamp remains on when the brakes are released | 8 |
| Horn not working |1.7.3a| | 8 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 7 |
| Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 7 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 7 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 6 |
| Riders seat insecure |6.2.1a| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 6 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 5 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Stop lamp does not emit a steady light |1.3.1b| | 5 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 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 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Registration plate lamp issues | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front Brake excessively binding |1.2.1 |f|| | 4 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Front suspension has inadequate damping effect. |2.3.6c| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Front position lamp incorrect colour |1.1.2a| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 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 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Nearside Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 3 |
| Stop lamp emits other than a steady red light |1.3.1b| | 3 |
| Headlamp switch faulty |1.2.4| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 3 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Handlebar deformed |2.1.1b| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 2 |
| Exhaust silencer insecure |8.1.1 |b| |i|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Riders seat insecure |6.2.5 |a| |ii|| | 2 |
| Offside Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Horn missing |1.7.1| | 2 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 2 |
| Nearside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Offside Rear Direction indicator missing |1.5.1a| | 2 |
| Front Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Headlamp not working on dipped beam |4.1.1 |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 |
| Horn not working (7.7 (a)) | 1 |
| Front Brake hose excessively twisted rubbing on forks (1.1.12 (b) (ii)) | 1 |
| Steering operation restricted in free movement from lock to lock brake hose and cables being trapped (2.1.4 (c)) | 1 |
| Rear Brake excessively binding rear brake sticking on (1.2.1 (f)) | 1 |
| Fuel hose damaged damaged at end of hose (6.1.3 (c) (ii)) | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Horn sound not in accordance with requirements not continously soundind, or loud enough for for other road users to hear (7.7 (c)) | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front Upper Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| 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 |
| Front Suspension component modified so the suspension is inoperative forks (5.3.3 (c) (ii)) | 1 |
| Front Suspension component has an unsafe modification (5.3.3 (c) (i)) | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Front Motorcycle structure joining/attachment plate or fastening insecure fairing (6.1.1 (b) (i)) | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake cable guide defective and affecting operation (1.1.15 (d)) | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake caliper damaged and braking performance affected |1.1.16 |a| |ii|| | 1 |
| Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| All direction indicators light intensity significantly reduced (4.4.3 (a)) | 1 |
| Nearside Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component front forks |2.3.4| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake pipe union leaking fluid hose to caliper |3.2.B4| | 1 |
| Rear Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Front Shock absorber has an excessively worn bush forks have excessive movement |5.3.2 |c|| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Steering headbearing has excessive wear or free play excessive play in headstock bearing. (2.2.2 (f) (i)) | 1 |
| Horn control not readily accesible. quiet |1.7.2a| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front Brake cable insecure |1.1.15 |c|| | 1 |
| Central Rear Upper Stop lamp does not emit a steady light Stop light not operating off either brake lever |1.3.1b| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake linkage has restricted free movement |1.1.15 |e|| | 1 |
| Rear Brake linkage has restricted free movement |1.1.15 |e|| | 1 |
| Rear All direction indicators obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Direction indicators flashing less than 60 times a minute both sides |1.5.1c| | 1 |
| Shock absorber has negligible damping effect SEIZED FRONT FORK (5.3.2 (b)) | 1 |
| Nearside Direction indicator missing |1.5.1a| | 1 |
| Offside Direction indicator missing |1.5.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Steering movement excessively notchy with the weight on the lower bearing (2.2.1a) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Stop lamp does not illuminate immediately a brake applies from front or rear lever controls |1.3.1a| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Horn not working horn not continous , on then off as button pressed (7.7 (a)) | 1 |
| Forks excessively deformed wheel fouls fairing when under suspension (2.2.2 (d) (i)) | 1 |
| Engine mounting/bracket bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake hose excessively twisted |1.1.12 |b| |ii|| | 1 |
| Front Wheel spindle or securing nut|s| so insecure that wheel security or steering control is adversely affected |5.2.1 |c| |ii|| | 1 |
| Wheel spindle or securing nut|s| so insecure that wheel security or steering control is adversely affected |5.2.1 |c| |ii|| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Front Floor brake test indicates a severely grabbing brake Caliper Pistons siezed |3.3.C2d| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| All direction indicators light intensity significantly reduced all 4 |4.4.3 |a|| | 1 |
| Nearside Rear Direction indicator likely to become detached insicure |4.4.1 |c| |ii|| | 1 |
| Offside Front suspension assembly excessive wear or free play in a front suspension component stanchion/ forks |2.3.4| | 1 |
| Front Front suspension assembly component excessively corroded. shocks |2.3.1| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component both shockers |2.3.4| | 1 |
| Stop lamp does not emit a steady light with front lever |1.3.1b| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component shock absorbers |2.3.4| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Suspension component modified so the suspension is inoperative forks semi-seized |5.3.3 |c| |ii|| | 1 |
| Front Stop lamp switch with a delay in operation intermittant |4.3.2 |a| |ii|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected loose (2.2.2 (f) (ii)) | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Nearside Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Front position lamp incorrect colour |1.1.2a| | 1 |
| Front position lamp obscured more than 50% |1.1.1d| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake component is fractured |3.1.5| | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Central Rear Outer Suspension arm attachment bracket/mounting corroded and seriously weakened (5.3.3 (b) (i)) | 1 |
| Central Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Nearside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Front Upper Fairings insecure and likely to impede the steering Handlebar fairing insecure! |2.1.2e| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Stop lamp emits other than a steady red light problem is from the rear brake |1.3.1b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Nearside Lower Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Lower Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Lower Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear suspension component excessively bent |2.4.A.1a| | 1 |
| Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Brake component has an inadequate repair |3.1.5| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Central Front Lower Brake excessively binding |1.2.1 |f|| | 1 |
| Offside Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Rear reflector on motorcycle missing new reflector fitted |1.4.1| | 1 |
| Offside Front Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Rear Brake hose leaking at banjo bolt |1.1.12 |c|| | 1 |
| Rear Brake has no recorded effort at a wheel no rear brake |1.2.1 |a| |ii|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Shock absorber has a serious fluid leak front fork pitted |5.3.2 |b|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Stop lamp does not illuminate immediately a brake applies does not work for the front brake |1.3.1a| | 1 |