| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 25 |
| Registration plate issues | 10 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering steering yokes distorted |2.5.1| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Rear Rear reflector missing |1.5.1a| | 1 |
| Offside Rear Rear reflector missing |1.5.1a| | 1 |
| Rear Brake pipe inadequately supported |3.6.B.1| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Fuel tank leaking excessively or a risk of fire |6.1.3 |b| |ii|| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Lower Front suspension assembly component loose |2.3.1| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Nearside Rear rear brake recording little or no effort |3.7.B.5a| | 1 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 1 |
| Rear parking brake recording little or no effort | 1 |
| Front position lamp|s| not working |1.1.A.3b| | 1 |
| Nearside Rear Stop lamp not working |1.2.1b| | 1 |
| Offside Rear Stop lamp not working |1.2.1b| | 1 |
| Rear Brake pedal has excessive side movement indicating a badly worn bearing or pivot |3.3.A.1d| | 1 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Headlamp switch faulty |1.2.4| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Headlamp aim beam image kick up to the offside Deflector tape fitted |1.6| | 1 |
| Vehicle identification number not legible |6.3.5a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Nearside Rear Exhaust is leaking and excessively noisey silencer holed and blowing x2 |7.1.1b| | 1 |
| Rear Stop lamp remains on when the brake is released with rear brake lever |1.3.1e| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Wheel fixing missing (single fixing) spindle split pin missing (5.2.1 (a) (ii)) | 1 |
| Rear Brake component insecure brake arm split pin missing (1.1.21 (c)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Exhaust system insecure (6.1.2 (a)) | 1 |
| Exhaust has a major leak of exhaust gases centre (6.1.2 (a)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected steering stiff to operate (2.2.2 (f) (ii)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Registration plate lamp issues | 1 |
| Front Brake hose leaking Banjo bolt loose (1.1.12 (c)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |