| Most common failures | No# failures |
|---|
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 23 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 15 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Headlamp aim out of alignment | 11 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 8 |
| Horn not working |1.7.3a| | 7 |
| Registration plate issues | 7 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment |1.1.15 |f|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort needs adjusting/does not lock up, lever touching handlebar |3.3.A1c| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Offside Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Rear Upper Direction indicators not working |1.5.1c| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Front Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake cable insecure |1.1.15 |c|| | 1 |
| Fuel cap ineffective seal missing |6.1.3 |b| |i|| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Brake lever has inadequate reserve travel rear |3.1.3b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Offside Front Front suspension assembly component loose |2.3.1| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Fairings insecure and likely to impede the steering danger of falling off , insecure and broken |2.1.2e| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Brake performance not tested |3.3| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Offside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies application |1.3.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Front Upper Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Brake lever pivot has excessive free play bolt loose (1.1.1 (b)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Wheel hub excessively worn (5.2.1 (b) (i)) | 1 |
| Nearside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Suspension component pin or bush excessively worn engine mount bushes deteriated (5.3.4 (a) (i)) | 1 |
| Front Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake cable has restricted free movement rear brake lever sticking (1.1.15 (e)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| 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 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear Brake drum significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Decelerometer brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |