| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 21 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 14 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Registration plate issues | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| 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)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 2 |
| All direction indicators incorrect colour (4.4.3 (a)) | 2 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 2 |
| All direction indicators not working |4.4.1 |a| |ii|| | 2 |
| Front Brake disc contaminated |1.1.14 |b|| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Front Lower Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Lower Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Brake performance not tested on pad in rear (1.2.1 (g)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Wheel bearing rough when rotated and has play in (5.1.3 (b) (i)) | 1 |
| Throttle operating incorrectly cables damaged/right hand lock not returning |6.2.1f| | 1 |
| Offside Front Footrest missing |6.2.1a| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies when operating rear brake |1.3.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Stop lamp does not illuminate immediately a brake applies hand |1.3.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies foot |1.3.1a| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Rear suspension component misaligned |2.4.A.1a| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprockrt nut |6.2.1h| | 1 |
| Drive chain worn to excess rusty (6.1.7 (c) (i)) | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Rear position lamp missing |1.1.1a| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Throttle operating incorrectly sticks on right hand lock |6.2.1f| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Position lamp switch faulty dip beam does not always illuminate when switched on |1.1.4a| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Front Footrest missing |6.2.1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level |1.1.10 |d| |ii|| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 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 Rear Brake hose connection leaking (1.1.12 (c)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Throttle operating incorrectly Throttle slider broken and cables incorrectly adjusted (6.2.7 (a) (i)) | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition Not tested as bike not starting. |7.1.2| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Stop lamp not working lever (4.3.1 (a) (ii)) | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Front Direction indicator obviously incorrectly positioned need to be at least 240mm apart (4.4.3 (a)) | 1 |
| Central Rear reflector on motorcycle missing |1.4.1| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride on chain link |6.2.1h| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride speedo lock tab wrong side of fork leg |6.2.1h| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock Does not return on right lock |2.1.4| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies Brake light not illuminating when front brake pressed |1.3.1a| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Brake pipe excessively damaged |1.1.11 |c|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Nearside Rear Upper Direction indicators not working |1.5.1c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp not working control 2 (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp missing (4.3.1 (a) (ii)) | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Rear Brake locking device insecure footbrake |3.2.A1e| | 1 |
| Headlamp aim headlamp deteriorated and function impaired changed bulb
|1.2.3a| | 1 |
| Front shock absorber seal failed and leaking oil LEAKING ADVERSELY ONTO CALIPER SIDE |2.3.3| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Brake master cylinder leaking front brake sight glass leaking (1.1.10 (b) (ii)) | 1 |
| Brake fluid reservoir fluid not visible brake sight blanket with 5p piece (1.1.10 (d) (iii)) | 1 |
| Direction indicator not working near side front indicator (4.4.1 (a) (ii)) | 1 |
| Direction indicator not working rear off side indicator (4.4.1 (a) (ii)) | 1 |
| Stop lamp light intensity significantly reduced stop lamp intensity significantly reduced when lights are on (4.3.3 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake clevis joint insecure pin missing (1.1.15 (c)) | 1 |
| Rear Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride link clip |6.2.1h| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Fuel cap ineffective not checked no key (6.1.3 (b) (i)) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Brake pivot excessively corroded mounting bracket broken |1.1.15 |b|| | 1 |
| Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Front Footrest insecure |6.2.12 |a|| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Brake fluid contaminated |1.8 |a|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock stick when turned to the right |2.1.4| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam no dip beam |1.2.2a|i|| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake fluid reservoir severely damaged |3.2.B1b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam low beam not working |1.2.2a|i|| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure mudguard |6.1.1 |b| |i|| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear 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 |
| Rear 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 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Brake fluid not visible brake master cylinder sight glass hold and broken may be comtamernated (1.1.10 (d) (iii)) | 1 |
| Front Brake fluid significantly below minimum mark hand brake (1.1.10 (d) (ii)) | 1 |
| Rear Brake fluid contaminated foot brake (1.8 (a)) | 1 |
| Offside Front Brake component insecure hose (1.1.21 (c)) | 1 |
| Offside Rear Brake component insecure hose (1.1.21 (c)) | 1 |
| Drive chain so loose it is likely to fail rubbing on the frame (6.1.7 (c) (ii)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |