| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Registration plate issues | 13 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 10 |
| Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Rear Brake disc|s| cracked |3.2.A1g| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Riders seat insecure (6.2.5 (a) (ii)) | 3 |
| Horn not working (7.7 (a)) | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Offside Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Headlamp incorrect colour |1.2.1| | 1 |
| Offside Headlamp incorrect colour |1.2.1| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 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 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Nearside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Offside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Front Steering damper ineffective |2.1.2d| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Registration plate lamp issues | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Centre Front Upper Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Motorcycle structure cracked |6.1.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Brake hose damaged | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Fuel pipe leaking |6.1.3 |b| |i|| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Shock absorber has a serious fluid leak both front fork sills (5.3.2 (b)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen BEAM KICK UP INCORRECT |4.1.2 |a|| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Front Brake disc insecure all bolt was missing (1.1.14 (a) (ii)) | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Centre Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake component is severely distorted |3.1.5| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Direction indicators flashing less than 60 times a minute All indicators |1.5.1c| | 1 |
| Headlamp main beam affected by the operation of another lamp Main beam flashing? |1.2.2c| | 1 |
| Nearside Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside 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 Footrest insecure (6.2.12 (a)) | 1 |
| Rear suspension bush has excessive free play bottom of shock |2.4.A2a|i|| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Central Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake fluid not visible (1.1.10 (d) (iii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Offside Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Shock absorber has a serious fluid leak Both (5.3.2 (b)) | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |