| Most common failures | No# failures |
|---|
| Registration plate issues | 53 |
| Rear reflector on motorcycle missing |1.4.1| | 21 |
| Rear reflector missing (4.8.2 (a) (ii)) | 12 |
| Headlamp aim out of alignment | 10 |
| Rear reflector missing |4.8.2 |a| |ii|| | 9 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Registration plate lamp issues | 7 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 6 |
| Horn not working |1.7.3a| | 5 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 4 |
| Headlamp aim not tested (4.1.2 (b)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Headlamp aim not tested |4.1.2 |b|| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 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 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Suspension component pin or bush excessively worn Shock bush |5.3.4 |a| |i|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Central Front Upper Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Suspension component pin or bush excessively worn Play in rear suspension bush (5.3.4 (a) (i)) | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Brake performance not tested |3.3| | 1 |
| Nearside Front Brake disc contaminated disc and pads soaked in fork oil (1.1.14 (b)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Suspension rod ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Steering headbearing excessively stiff or notchy headbearings centring without load on steering (2.2.2 (f) (i)) | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Rear Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced Rear Hugger (6.1.1 (b) (ii)) | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Brake pedal is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Exhaust markings indicating not for road use or similar wording |6.1.2 |c|| | 1 |
| Rear Shock absorber has an excessively worn bush rear shock mount (5.3.2 (c)) | 1 |
| Nearside Stop lamp obscured and offside |1.3.1c| | 1 |
| Nearside Rear position lamp obscured more than 50% and offside |1.1.1d| | 1 |
| Nearside Rear Direction indicator obscured and offside rear |1.5.1a| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies from front or rear brake |1.3.1a| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear wheel rotation likely to be impeded rear hugger has a bolt missing |6.2.1b| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Shock absorber has a serious fluid leak Both (5.3.2 (b)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Central Front Horn not working |7.7 |a| |ii|| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Steering headbearing excessively stiff or notchy notchy (2.2.2 (f) (i)) | 1 |
| Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Lower Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Offside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Outer Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Steering headbearing has excessive wear or free play Free Play |2.2.2 |f| |i|| | 1 |
| Front Brake lever has insufficient reserve travel brake requires pump up to reduce travel (1.1.2 (a)) | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies aplication |1.3.1a| | 1 |