| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 39 |
| Headlamp aim out of alignment | 34 |
| Registration plate issues | 26 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 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 |
| Registration plate lamp issues | 4 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Rear reflector on motorcycle missing (1.4.1) | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| 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| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Horn not working |1.7.3a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Motorcycle structure cracked |6.1.1a| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Steering damper in such a condition that the steering action is impaired. (2.1.2d) | 1 |
| Offside Front Direction indicators not working (1.5.1c) | 1 |
| Exhaust markings indicating not for road use or similar wording (7.1.4) | 1 |
| Outer Front Upper Steering lock stop ineffective (2.1.3) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 1 |
| Front Steering headbearing has excessive free play (2.2.2) | 1 |
| Horn control not functioning. (1.7.2b) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| 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 |
| Outer Front Upper Steering lock stop maladjusted (2.1.3) | 1 |
| Centre Rear Upper Rear suspension bearing has excessive free play (2.4.A2a(i)) | 1 |
| Steering lock stop maladjusted (2.1.3) | 1 |
| Rear suspension bush has excessive free play (2.4.A2a(i)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Stop lamp not working from either control (front/rear) (4.3.1 (a) (ii)) | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Brake pedal pivot has excessive free play bolt loose |1.1.1 |b|| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Headlamp missing |1.2.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies REAR BRAKE LEVER |1.3.1a| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Front Headlamp switch insecure |1.2.4| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake pedal is inoperative (3.1.3c) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. (3.3.A2b) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Offside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Position lamp not working replaced bulb |4.2.1 |a|| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear Brake lever excessively damaged |3.2.A1c| | 1 |
| Rear Wheel spindle loose |5.2.1 |c| |i|| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Front Handlebar handgrip missing |2.1.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Nearside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Outer Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Inner Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Outer Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Brake grabbing severely rear master cylinder siezed. (1.2.1 (c)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front Upper Motorcycle structure excessively damaged Engine to frame mount has some movement |6.1.1a| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear Direction indicator adversely affected by the operation of another lamp when brake applied (4.4.3 (b)) | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |