| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 35 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 26 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 19 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 12 |
| Registration plate lamp issues | 10 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Headlamp aim not tested |1.6| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Registration plate issues | 3 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Horn not working |1.7.3a| | 3 |
| Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 2 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Throttle operating incorrectly sticking on. |6.2.1f| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Horn sound not in accordance with requirements harsh tones (7.7 (c)) | 1 |
| Offside Front Upper Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Nearside Rear Rear shock absorber insecurely mounted ring broken |2.4.A.3b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Central Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp not working LOOSE WIRE (4.3.1 (a) (ii)) | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Stop lamp showing white light to the rear (4.3.3 (a) (ii)) | 1 |
| Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 1 |
| Nearside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Shock absorber has negligible damping effect Oil has leaked out (none left) (5.3.2 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Exhaust is leaking and excessively noisey pipe |7.1.1b| | 1 |
| Rear position lamp incorrect colour rear lamp damaged |1.1.2b| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Nearside Position lamp not working |4.2.1 |a|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Nearside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Offside Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Steering headbearing excessively stiff or notchy excessively notchy (2.2.2 (f) (i)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Offside Rear Rear suspension has a fracture of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Upper Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Offside Front position lamp missing |1.1.1a| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Rear Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Fuel cap ineffective seal missing |6.1.3 |b| |i|| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Offside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Throttle operating incorrectly sticking on |6.2.1f| | 1 |
| Centre Front Lower Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Direction indicator not working both n/s not working /switch fault (4.4.1 (a) (ii)) | 1 |
| Offside Direction indicator obscured |1.5.1a| | 1 |
| Offside Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Upper Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Shock absorber has negligible damping effect shaft possibly broken, has excessive movement (5.3.2 (b)) | 1 |
| Front Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Nearside Front Shock absorber has a serious fluid leak seal (5.3.2 (b)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear Lower Exhaust mounting missing |7.1.1c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Offside Rear Shock absorber likely to become detached |5.3.2 |a| |ii|| | 1 |
| Offside Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Rear Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |