| Most common failures | No# failures |
|---|
| Registration plate issues | 92 |
| Rear reflector on motorcycle missing |1.4.1| | 84 |
| Headlamp aim out of alignment | 49 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 15 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Rear reflector missing (4.8.2 (a) (ii)) | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear reflector missing |4.8.2 |a| |ii|| | 10 |
| 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| | 10 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Brake pipe excessively corroded | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Horn not working |1.7.3a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Rear 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| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 2 |
| Registration plate lamp issues | 2 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Horn missing |1.7.1| | 1 |
| Horn replaced by a gong |1.7.3b| | 1 |
| Front Brake indicates excessive fluctuation of brake effort 30kgf variation |1.2.1 |e|| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on Rear |1.1.3a| | 1 |
| Front 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| | 1 |
| Offside Front Brake component leaking fluid |3.2.B4| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Offside Front Lower Motorcycle structure cracked |6.1.1a| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake hose damaged and likely to fail |1.1.12 |a|| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Offside Rear 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| | 1 |
| Brake reaction bracket insecure not located correctly |3.2.A1j| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| An item not tested |Manual| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Drive belt guard insecure |6.2.1c| | 1 |
| Front Front wheel spindle loose |2.3.5a| | 1 |
| Rear reflector missing Fit reflector |4.8.2 |a| |ii|| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Stop lamp not working foot operated |4.3.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Rear Upper Direction indicator not working |1.5.1c| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Lower Front suspension assembly component missing |2.3.1| | 1 |
| Drive belt excessively loose. |6.2.1d| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Offside 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| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Centre Front Upper Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Brake caliper inadequately mounted (1.1.16 (c) (i)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Central Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Central Rear Lower Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Offside Front All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Offside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 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 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Rear Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Decelerometer brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| All direction indicators incorrect colour (4.4.3 (a)) | 1 |