| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 27 |
| Registration plate issues | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Horn not working |1.7.3a| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Nearside Rear Direction indicators not working |1.5.1c| | 4 |
| Rear Brake disc|s| cracked |3.2.A1g| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 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 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Brake hose leaking (1.1.12 (c)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Front suspension assembly has an insecure fork brace |2.3.4d| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside 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 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Brake lever is positioned so that the brake cannot be readily applied fouling throttle |3.1.3c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Front Motorcycle structure adversely modified |6.1.1b| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Central Rear Stop lamp not working bulb blown |4.3.1 |a| |ii|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Front Lower Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Nearside Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Offside Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Drive chain sprocket carrier worn to excess Sprocket carrier bearing |6.2.1e| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear suspension bush has excessive free play Lower shock |2.4.A2a|i|| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess Rear sprocket carrier bearing excessively worn. (6.1.7 (c) (i)) | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake performance not tested (1.2.1 (g)) | 1 |
| Fuel cap ineffective Filler cap seal defective (6.1.3 (b) (i)) | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Offside Direction indicator incorrect colour |1.5.1b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Drive chain so loose it is likely to fail adjusted (6.1.7 (c) (ii)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Central Motorcycle structure is fractured and structural rigidity is significantly reduced |6.1.1 |a| |i|| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |