| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 44 |
| Registration plate issues | 11 |
| Horn not working |1.7.3a| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Throttle operating incorrectly |6.2.1f| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Nearside Front Brake pipe inadequately supported |3.2.B2b| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Fuel cap sealing washer torn |7.2.2c| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Fuel pipe leaking |7.2.1a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Front Brake pipe inadequately supported |3.2.B2b| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear suspension bush has excessive free play off side swingarm bush |2.4.A2a|i|| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Offside Front Fuel system component leaking |7.2.1a| | 1 |
| Inner Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front Brake locking device insecure |3.2.A1e| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking sidestand |6.1.1c| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Upper Riders seat insecure |6.2.1a| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Fuel system component leaking |7.2.1a| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Fuel system component leaking Offside carb |7.2.1a| | 1 |
| Offside Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Inner Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Sidecar direction indicator not working |1.5.1c| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp Not working with the tail light on! |4.3.3 |b|| | 1 |
| Rear Position lamp switch does not operate in accordance with the requirements Switch faulty! |4.2.2 |a|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Horn missing |1.7.1| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Nearside Fuel pipe leaking |6.1.3 |b| |i|| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Nearside Front Indicator tell tale not functioning |1.5.2| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Sidecar wheel bearings have excessive free play |5.2.3c| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| An item not tested |Manual| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Sidecar wheel bearings are excessively rough |5.2.3d| | 1 |
| Sidecar attachment missing |5.1.1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Brake component leaking fluid brake caliper |3.2.B4| | 1 |
| Rear Rear position lamp deteriorated and function impaired Rear light not working and can not remove lens cover |1.1.1b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil excessive leaking to the nearside fork seal contaminating break caliper and disc |2.3.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Steering operation restricted in free movement from lock to lock Head bearing adjustment too tight |2.1.4 |c|| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Offside Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Rear reflector missing Sidecar (4.8.2 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |