| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 32 |
| Drive chain excessively loose |6.2.1d| | 16 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 12 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 10 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Registration plate issues | 7 |
| Horn not working |1.7.3a| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| 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|| | 2 |
| Front Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 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 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Front Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake lagging in operation |1.2.1 |d|| | 1 |
| Rear Brake pedal so insecure that the brake cannot be readily applied |1.1.2 |e| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies brake applied |1.3.1a| | 1 |
| Nearside Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Front position lamp missing |1.1.1a| | 1 |
| Nearside Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front An item not tested |Manual| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Wheel more than one fixing missing spindle lock nut pin |5.2.1 |a| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Wheel spoke excessively loose REAR X 2 |4.2.1b| | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake hose which buldges |3.2.B4| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Upper Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Nearside Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Brake excessively binding brake cam seized and cable binding |1.2.1 |f|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Wheel fixing missing (single fixing) rear split pin replaced (5.2.1 (a) (ii)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort (3.3.A1d) | 1 |
| Exhaust is leaking and excessively noisey (7.1.1b) | 1 |
| Steering movement excessively notchy with the wheel raised (2.2.1b) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Upper Stop lamp not working hand brake switch faulty (4.3.1 (a) (ii)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Brake pedal anti-slip provision worn smooth (1.1.2 (c)) | 1 |