| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 25 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 14 |
| Nearside Steering lock stop ineffective |2.1.3| | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 8 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Registration plate lamp issues | 6 |
| Headlamp aim not tested (4.1.2 (b)) | 6 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Offside Steering lock stop ineffective |2.1.3| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Registration plate issues | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Nearside Front Steering linkage locking device ineffective (2.1.3 (d)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Fuel cap sealing washer missing |7.2.2c| | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Steering linkage locking device ineffective |2.1.3 |d|| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 2 |
| Indicator switch defective Lubed. Working OK at time of test. |1.5.4| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Fuel hose insecure fuel tap (6.1.3 (a) (i)) | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Steering linkage locking device ineffective Appears to be no left hand steering stop. (2.1.3 (d)) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Nearside Front Steering linkage locking device missing (2.1.3 (d)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Fuel cap ineffective fuel cap seal missing (6.1.3 (b) (i)) | 1 |
| Steering linkage locking device ineffective n/s steering lock ineffective (2.1.3 (d)) | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Fork yoke in such a condition that steering control is adversely affected nearside lock stop missing so steering turns until handlebar hits seat (2.2.2 (d) (ii)) | 1 |
| Stop lamp not working when applying front brake (4.3.1 (a) (ii)) | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Fuel cap ineffective missing seal (6.1.3 (b) (i)) | 1 |
| Front Steering operation linkage fouling when handlebars turned from lock to lock lock stop missing on LH lock (2.1.4 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Horn not working |1.7.3a| | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Rear Suspension component pin or bush excessively worn forward engine pivot (5.3.4 (a) (i)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering handle bars out of alignment (2.4 (a)) | 1 |
| Stop lamp not working Front brake control brake light not working. (4.3.1 (a) (ii)) | 1 |
| Front Headlamp insecure |4.1.1 |c|| | 1 |
| Rear Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Suspension arm ball joint likely to become detached |5.3.4 |a| |ii|| | 1 |
| Front Fork yoke in such a condition that steering control is adversely affected |2.2.2 |d| |ii|| | 1 |
| Front Dipswitch does not operate immediately when selected on main beam |4.1.3 |b|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock NO LEFT HAND STEERING STOP (2.1.4 (b)) | 1 |
| Suspension arm pin or bush excessively worn ENGINE SWINGING ARM BEARINGS WORN TO EXCESS (5.3.4 (a) (i)) | 1 |
| Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Nearside Front Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Fork yoke excessively deformed (2.2.2 (d) (i)) | 1 |
| Nearside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Lower Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Upper Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake lining|s| less than 1.0 mm thick |1.1.13 |a|| | 1 |
| Rear Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Forks excessively deformed (2.2.2 (d) (i)) | 1 |
| Front Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock |2.1.4 |a|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock fairing insecure and catching (2.1.4 (b)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Stop lamp not working all lights (4.3.1 (a) (ii)) | 1 |
| All direction indicators not working all (4.4.1 (a) (ii)) | 1 |
| Direction indicator not working all indicators working diagonally instead of side to side |4.4.1 |a| |ii|| | 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 |
| Front Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Upper Steering lock stop missing |2.1.3| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Front Steering linkage locking device ineffective |2.1.3 |d|| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Nearside Brake lever insecure |3.1.2a| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Headlamp aim not tested not working |1.6| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |