| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 17 |
| Headlamp aim out of alignment | 16 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 9 |
| Steering linkage has excessive free play |2.2.2| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Registration plate issues | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Offside Rear Direction indicator insecure |1.5.3b| | 4 |
| Horn not working |1.7.3a| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Front position lamp damaged and function impaired |1.1.1b| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front suspension assembly component cracked |2.3.1| | 2 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Registration plate lamp issues | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Inner Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Horn not working (1.7.3a) | 1 |
| Steering movement excessively rough with the wheel raised (2.2.1b) | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Position lamp likely to become detached (4.2.1 (c) (ii)) | 1 |
| Nearside Front Brake lever mounting insecure |3.1.2a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Rear Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Rear Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| An item not tested |Manual| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Steering linkage ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt |2.1.3 |g| |ii|| | 1 |
| Gradient brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.D1b| | 1 |
| Gradient brake test No brake control achieves an efficiency of 30%. |3.3.D1a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Headlamp at least one does not illuminate on dipped beam dipped beam not working |1.2.2a|i|| | 1 |
| Upper Steering linkage has excessive free play |2.2.2| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Brake component has an inadequate repair |3.1.5| | 1 |
| Front Lower Steering linkage has excessive free play |2.2.2| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Front Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Brake lever mounting insecure |3.1.2a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Steering linkage has excessive free play |2.2.2| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Upper Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Nearside Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| 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 |
| Nearside Brake lever insecure |3.1.2a| | 1 |
| Offside Brake lever insecure |3.1.2a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Brake component has an inadequate repair |3.1.5| | 1 |
| Rear Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working When operated from front brake lever. (4.3.1 (a) (ii)) | 1 |
| Brake has no recorded effort at a wheel front brake (1.2.1 (a) (ii)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Centre Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Rear Brake component is severely distorted |3.1.5| | 1 |
| Handlebar mounting clamp loose handle bars loose |2.1.1a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Front Lower Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |