| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 54 |
| Steering headbearing has excessive free play |2.2.2| | 27 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 25 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 22 |
| Horn not working |1.7.3a| | 18 |
| Registration plate issues | 14 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 13 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 12 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 11 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 11 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Offside Rear Direction indicator not working |1.5.1c| | 10 |
| Front Direction indicator incorrect colour |1.5.1b| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 9 |
| Front wheel bearings are excessively rough |2.3.5b| | 9 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 7 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 7 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Registration plate lamp issues | 7 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 6 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 6 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 5 |
| Handlebar mounting clamp loose |2.1.1a| | 5 |
| Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Nearside Rear Direction indicators not working |1.5.1c| | 5 |
| Headlamp switch faulty |1.2.4| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 5 |
| Offside Rear Direction indicators not working |1.5.1c| | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Riders seat insecure |6.2.1a| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 3 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Rear Brake lever attachment screws loose |3.1.2b| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 3 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Rear reflector on motorcycle obscured |1.4.2b| | 3 |
| Rear Brake lever insecure |3.1.2a| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Exhaust mounting missing |7.1.1c| | 3 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 2 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Horn not working (7.7 (a)) | 2 |
| 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)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Front Front mudguard insecure |2.3.7| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Riders seat insecure |6.2.5 |a| |ii|| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Fuel cap sealing washer missing |7.2.2c| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Front position lamp missing |1.1.1a| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 2 |
| Offside Front Position lamp not working (4.2.1 (a)) | 2 |
| Nearside Front Direction indicator incorrect colour |4.4.3 |a|| | 2 |
| Offside Front Direction indicator incorrect colour |4.4.3 |a|| | 2 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front suspension assembly component excessively bent |2.3.1| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |