| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 16 |
| Drive chain excessively loose |6.2.1d| | 10 |
| 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| | 9 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Horn not working |1.7.3a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Rear Drive chain worn to excess |6.2.1e| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Registration plate issues | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Brake grabbing severely (1.2.1 (c)) | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Fuel cap missing |7.2.2a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Central Rear Stop lamp not working REAR BRAKE LIGHT SWITCH ADJUSTED |4.3.1 |a| |ii|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear suspension component misaligned |2.4.A.1a| | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake back plate|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Fuel cap ineffective no seal |6.1.3 |b| |i|| | 1 |
| Fuel hose leaking excessively or a risk of fire hose to tape |6.1.3 |b| |ii|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| 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|| | 1 |
| Exhaust silencer likely to become detached |8.1.1 |b| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Rear Wheel fixing missing |single fixing| rear wheel nut security locking pin missing |5.2.1 |a| |ii|| | 1 |
| Offside Rear Lower Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Stop lamp not working using front brake lever. (4.3.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Rear Footrest missing o/s and n/s (6.2.12 (a)) | 1 |
| 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)) | 1 |
| Front Steering linkage locking device missing wheel hub (2.1.3 (d)) | 1 |
| Rear Steering linkage locking device missing wheel hub (2.1.3 (d)) | 1 |
| Offside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Brake pedal anti-slip provision missing |1.1.2 |c|| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Central Front Brake excessively binding (1.2.1 (f)) | 1 |
| Central Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Front Lower Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Upper Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected sticking from lock to lock and not returning (6.2.7 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure rear back rest insecure (6.1.1 (b) (i)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| An item not tested |Manual| | 1 |
| Rear Roller brake test indicates a binding brake brake plate arm sticking |3.3.A1a| | 1 |
| Drive chain sprocket carrier worn to excess play in bearing |6.2.1e| | 1 |
| Stop lamp not working On front switch |4.3.1 |a| |ii|| | 1 |
| Wheel more than one fixing missing Locking pin |5.2.1 |a| |ii|| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |