| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 61 |
| Rear reflector missing (4.8.2 (a) (ii)) | 44 |
| Registration plate issues | 28 |
| Registration plate lamp issues | 26 |
| Rear reflector missing |4.8.2 |a| |ii|| | 17 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 16 |
| Horn not working (7.7 (a)) | 8 |
| Horn not working (7.7 (a) (ii)) | 6 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 5 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 5 |
| Offside Rear Footrest missing (6.2.12 (a)) | 5 |
| Rear All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| 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)) | 4 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Exhaust markings indicating not for road use or similar wording |6.1.2 |c|| | 3 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 3 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Offside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 2 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 2 |
| Nearside Front Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Nearside Rear Footrest missing pillion (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing pillion (6.2.12 (a)) | 1 |
| Central Front Upper Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Offside Front Upper Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake caliper has no reserve travel and braking performance affected (1.1.16 (e) (ii)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Wheel bearing has excessive play Front wheel bearings (5.1.3 (a) (i)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (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 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Outer Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Rear Direction indicator obviously incorrectly positioned 120mm a part |4.4.3 |a|| | 1 |
| Headlamp not working on dipped beam both headlamps (4.1.1 (a) (ii)) | 1 |
| Rear Footrest missing seat fitted (6.2.12 (a)) | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| Offside Front Shock absorber has a serious fluid leak Fork seal leaking |5.3.2 |b|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Position lamp adversely affected by the operation of another lamp |4.2.3 |b|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Direction indicator obviously incorrectly positioned Mandatory direction indicators must have minimum separation distances between the illuminating surfaces of:
solo motorcycles - 240mm at the front and 180mm at the rear (4.4.3 (a)) | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Rear Direction indicator obviously incorrectly positioned minimum allowed separation distance 180mm (4.4.3 (a)) | 1 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Brake lever has insufficient reserve travel lever bent restricting full travel. lever fouls throttle grip. (1.1.2 (a)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Throttle operating incorrectly Grip loose (6.2.7 (a) (i)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Fuel system component leaking excessively or a risk of fire fuel evap hose not connected (6.1.3 (b) (ii)) | 1 |
| Central Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Central Rear Direction indicator obviously incorrectly positioned Indicators at rear to close (4.4.3 (a)) | 1 |
| Offside Front Footrest insecure |6.2.12 |a|| | 1 |
| Rear 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 |
| Rear Direction indicator obviously incorrectly positioned both (4.4.3 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort 20kg (1.2.1 (e)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Offside Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear All direction indicators obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Rear Direction indicator obviously incorrectly positioned less than 180mm seperation between the illuminating light source (4.4.3 (a)) | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front position lamp does not illuminate immediately when switched on wrong colour |1.1.3a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front shock absorber seal failed and leaking oil both sides |2.3.3| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Throttle operating incorrectly Throttle sticks on full lock. (6.2.7 (a) (i)) | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Front Brake component inadequately mounted Master cylinder/lever mount cracked (1.1.21 (c)) | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Steering operation restricted in free movement from lock to lock on left hand lock. (2.1.4 (c)) | 1 |
| Rear Footrest missing A footrest missing or insecure both pillion no strap (6.2.12 (a)) | 1 |
| Rear 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 |
| Front All position lamps not working (4.2.1 (a)) | 1 |
| Front Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| All direction indicators obviously incorrectly positioned Distance between rear indicators does not meet the minimum requirements. |4.4.3 |a|| | 1 |
| Rear Direction indicator obviously incorrectly positioned both |4.4.3 |a|| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen no beam patten (4.1.2 (a)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Suspension component pin or bush excessively worn lower linkage (5.3.4 (a) (i)) | 1 |
| Headlamp lens seriously defective LED bulbs fitted (4.1.1 (b) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Direction indicator obviously incorrectly positioned To close together (4.4.3 (a)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Central Front Upper Headlamp not working on dipped beam bulb replaced (4.1.1 (a) (ii)) | 1 |
| Central Rear Upper Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Offside Front Shock absorber missing (5.3.2 (a) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |