| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 55 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Drive chain excessively loose |6.2.1d| | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 9 |
| Handlebar deformed |2.1.1b| | 8 |
| Horn not working |1.7.3a| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Stop lamp remains on when the brakes are released | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Rear Drive chain excessively loose |6.2.1d| | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Registration plate issues | 3 |
| Centre Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Rear Brake disc significantly and obviously worn disc worn/ brake judder on rear when carrying out brake performance checks (1.1.14 (a) (i)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 2 |
| Fuel system component leaking (6.1.3 (b) (i)) | 2 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Stop lamp remains on when the brake is released from front lever |1.3.1e| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Headlamp aim not tested dip beam not working (4.1.2 (b)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Stop lamp switch with a delay in operation goes off when full down (4.3.2 (a) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Suspension arm corroded and seriously weakened (5.3.3 (b) (i)) | 1 |
| Central Front Shock absorber has negligible damping effect forks low on suspension oil (5.3.2 (b)) | 1 |
| Nearside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Offside Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Upper Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Upper Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced engine cradle. (6.1.1 (c) (i)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Nearside Front Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Offside Front Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Motorcycle structure excessively corroded front frame engine mount area |6.1.1a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Fuel system component leaking RHS CARBURETOR (6.1.3 (b) (i)) | 1 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Nearside Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil Both fork seals blown, O/S is worse and appears to be very little oil in both forks. |2.3.3| | 1 |
| Inner Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls REPLACED BULB (4.3.2 (a) (iii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Horn control not functioning. |1.7.2b| | 1 |
| Offside Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Shock absorber has a serious fluid leak both front forks |5.3.2 |b|| | 1 |
| Central Front Upper Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Central Front Upper Horn not working |7.7 |a| |ii|| | 1 |
| Offside Front Upper Brake fluid not visible |1.1.10 |d| |iii|| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Front Suspension insecurely attached |5.3.3 |a| |i|| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Throttle operating incorrectly grip loose |6.2.1f| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Rear reflector missing Original covered by L plate. |4.8.2 |a| |ii|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Shock absorber insecurely attached bolt for linkage to frame loose |5.3.2 |a| |i|| | 1 |
| Suspension component mounting modified so the suspension is inoperative non standard rear shock fouling swingarm and does not compress correctly |5.3.3 |c| |ii|| | 1 |
| Drive chain excessively loose fouling on centre stand |6.1.7 |c| |i|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 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 |
| Throttle operating incorrectly sticking on offside full lock (6.2.7 (a) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Central Front Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 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 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Front Brake lever cracked |3.1.2c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Front Inner Suspension arm corroded and seriously weakened The inner side of the front left side of the swinging arm is holed from corrosion. (5.3.3 (b) (i)) | 1 |
| Central Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Handlebar retaining device loose |2.2.1 |b| |i|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies Replace front brake light switch |1.3.1a| | 1 |
| Front Engine mounting/bracket excessively loose engine mount nut missing |6.1.8 |a| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Front Brake cylinder leaking |1.1.16 |b| |i|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Offside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Stop lamp lens defective such that the emitted light is adversely affected |4.3.1 |b| |ii|| | 1 |
| Throttle operating incorrectly STICKING |6.2.7 |a| |i|| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Front Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced FRONT ENGINE MOUNT |6.1.1 |c| |i|| | 1 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Headlamp insecure mount bolt loose (4.1.1 (c)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Drive chain horseshoe locking device likely to become detached clip link missing (6.1.7 (j) (ii)) | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Fuel cap missing key missing unable to gain access |7.2.2a| | 1 |
| Brake hose damaged | 1 |
| Front Upper Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |