| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 32 |
| Registration plate issues | 29 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 13 |
| Headlamp aim beam image kick up to the offside |1.6| | 11 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear Brake disc|s| cracked |3.2.A1g| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 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 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Horn not working |1.7.3a| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Offside Front Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Front Front wheel bearings are excessively tight |2.3.5b| | 2 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Lower Exhaust excessively deteriorated |7.1.1a| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Handlebar deformed |2.1.1b| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Headlamp aim projected beam image obviously incorrect beam kick up wrong side (4.1.2 (c)) | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Front Motorcycle structure excessively damaged Front mudguard |6.1.1a| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Central Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Central Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Offside Front Upper Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Front Upper Handlebar deformed |2.1.1b| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Brake component insecure |1.1.21 |c|| | 1 |
| Exhaust silencer likely to become detached |8.1.1 |b| |ii|| | 1 |
| Registration plate lamp issues | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake |1.3.1a| | 1 |
| Nearside Front Brake cylinder severely corroded |3.2.B1b| | 1 |
| Offside Front Brake cylinder severely corroded |3.2.B1b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Throttle operating incorrectly no positive stop on closed throttle |6.2.1f| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Exhaust mounting does not fully support the exhaust system no mounting fitted |7.1.1.c| | 1 |
| Rear Rear suspension component misaligned |2.4.A.1a| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Throttle operating incorrectly |6.2.1f| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies brake lever |1.3.1a| | 1 |
| Brake pedal insecure locking device is missing |3.1.2a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Offside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Offside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Rear Lower Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Centre Rear Lower Brake disc|s| cracked |3.2.A1g| | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Front Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Headlamp incorrect colour too blue (4.1.4 (a)) | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Offside Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Nearside Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Throttle operating incorrectly grip loose, replaced (6.2.7 (a) (i)) | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Nearside Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Inner Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Stop lamp does not illuminate immediately a brake applies front stop lamp does not work |1.3.1a| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Lower Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Rear Footrest insecure Passenger Foot rest |6.2.1a| | 1 |