| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 12 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Registration plate lamp issues | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Brake hose damaged | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 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 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake fluid reservoir fluid not visible |1.1.10 |d| |iii|| | 1 |
| Brake component insecure Front brake fluid reservoir cap |1.1.21 |c|| | 1 |
| Brake performance not tested |1.2.1 |g|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| 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 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 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 Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Centre Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Offside Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Outer Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Offside Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Front Brake lever insecure pivot bolt locknut loose (1.1.2 (e) (i)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal |5.3.2 |b|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal leaking |5.3.2 |b|| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front suspension spring worn and seriously weakened |2.3.2b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Registration plate issues | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Brake caliper leaking and braking performance affected |1.1.16 |b| |ii|| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |