| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Registration plate lamp issues | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Nearside Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Registration plate issues | 2 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Footrest missing o/s n/s |6.2.1a| | 1 |
| Rear Stop lamp not working faulty (4.3.1 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Throttle operating incorrectly does not shut off correctly |6.2.1f| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Stop lamp not working Front brake (4.3.1 (a) (ii)) | 1 |
| Offside Front Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Clutch lever positioned so it cannot be readily operated Clutch lever pivot pin insecure (6.2.7 (b)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Front Brake lever so insecure that the brake cannot be readily applied Lever pivot pin has no retaining device (1.1.2 (e) (ii)) | 1 |
| Rear Brake pedal pivot has excessive free play push rod for rear brake cylinder insecure/ has no adjustment nut fitted (1.1.1 (b)) | 1 |
| Rear Brake pedal so insecure that the brake cannot be readily applied Clevis pin between rear brake pedal and rear brake pushrod has no retaining device (1.1.2 (e) (ii)) | 1 |
| Front Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Front Brake hose excessively stretched brake hose incorrectly fitted at front master cylinder (1.1.12 (b) (ii)) | 1 |
| Front Brake pipe likely to become detached or damaged both pipes/hoses retaining clips not secured to front mount brackets (1.1.11 (d) (ii)) | 1 |
| Rear Suspension component pin or bush excessively worn Rear suspension swing arm front bushes (5.3.4 (a) (i)) | 1 |
| Rear Shock absorber has an excessively worn bush Front bush at rear shock absorber pivot lever (5.3.2 (c)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Brake component insecure brake caliper mounting bracket fitted incorrectly (1.1.21 (c)) | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Offside Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Drive chain excessively tight, so that it is likely to fail |6.1.7 |k| |ii|| | 1 |
| Offside Front Position lamp not working |4.2.1 |a|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Horn not working |1.7.3a| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Centre Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Upper Suspension component pin or bush excessively worn Top shock mount (5.3.4 (a) (i)) | 1 |
| Drive chain excessively loose adjust |6.2.1d| | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Front Brake caliper leaking and braking performance affected |1.1.16 |b| |ii|| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil Leaking fork oil seal. |2.3.3| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake master cylinder defective but brake still operating |1.1.10 |b| |i|| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Stop lamp not working From both front and rear levers (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Rear suspension bearing has excessive free play swing arm |2.4.A2a|i|| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Roller brake test No brake control achieves an efficiency of 30% |1.2.2 |a| |i|| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Stop lamp does not illuminate immediately a brake applies not working on rear pedal |1.3.1a| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Offside Front Footrest insecure |6.2.12 |a|| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |