| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 34 |
| Registration plate lamp issues | 21 |
| Rear Brake excessively binding (1.2.1 (f)) | 11 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 7 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 7 |
| Stop lamp remains on when the brakes are released | 6 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 6 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 6 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 6 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 4 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 4 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Rear Footrest missing (6.2.12 (a)) | 3 |
| Registration plate issues | 3 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 2 |
| Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 2 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Footrest missing both pillion |6.2.12 |a|| | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level |1.1.10 |d| |ii|| | 1 |
| Front Stop lamp not working front switch (4.3.1 (a) (ii)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Drive chain worn to excess Links seized (6.1.7 (c) (i)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake cylinder leaking master cylinder (1.1.16 (b) (i)) | 1 |
| Rear Brake disc insecure bolt missing/broken |1.1.14 |a| |ii|| | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Brake rod insecure push rod to rear master cylinder |1.1.15 |c|| | 1 |
| Rear Brake excessively binding rear brake master cylinder sticking freed off |1.2.1 |f|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Rear Footrest missing Pillion pegs. (6.2.12 (a)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Stop lamp not working ** intermitant ** (4.3.1 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Front Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Headlamp aim not tested highbeam & lowbeam wired up wrong way |1.6| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear suspension bearing has excessive free play swing arm bearing |2.4.A2a|i|| | 1 |
| Offside Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Fuel cap mounting flange/sealing method defective sealing washer kinked |7.2.2c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Horn not working |1.7.3a| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Position lamp switch does not operate the front and rear position lamps taped over |1.1.4c| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Nearside Footrest insecure (6.2.12 (a)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Rear Brake linkage excessively worn (1.1.15 (b)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Nearside Footrest missing (6.2.12 (a)) | 1 |
| Offside Footrest missing (6.2.12 (a)) | 1 |
| Drive chain sprocket excessively loose locking tabs not fitted correctly (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket excessively loose cush drive (6.1.7 (c) (i)) | 1 |
| Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Front Steering headbearing has excessive wear or free play knocking can be felt through bars (2.2.2 (f) (i)) | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Fuel cap ineffective Seal repositioned. (6.1.3 (b) (i)) | 1 |
| Central Front Wheel alignment incorrect which adversely affects the handling Wheel points to the left (2.4 (a)) | 1 |
| Fuel cap ineffective seal damaged (6.1.3 (b) (i)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Nearside Rear Suspension component insecure and control of the motorcycle impaired (5.3.3 (a) (ii)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Wheel fractured |5.2.2 |a|| | 1 |
| Rear Wheel fractured |5.2.2 |a|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Fuel cap ineffective rubber not sealing (6.1.3 (b) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Exhaust system insecure (6.1.2 (a)) | 1 |
| Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Front Motorcycle structure is fractured and structural rigidity is significantly reduced mud gard (6.1.1 (a) (i)) | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake lever excessively worn (1.1.15 (b)) | 1 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake disc contaminated |1.1.14 |b|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Exhaust system insecure |6.1.2 |a|| | 1 |
| Rear Wheel spindle loose |5.2.1 |c| |i|| | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected |1.1.16 |c| |ii|| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies front brake control |1.3.1a| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Drive chain sprocket excessively loose sprocket nuts (6.1.7 (c) (i)) | 1 |
| Offside Rear Suspension arm mounting has an unsafe modification (5.3.3 (c) (i)) | 1 |
| Stop lamp switch with a delay in operation when hand lever applied (4.3.2 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front shock absorber seal failed and leaking oil N/S Front fork seal leaking oil |2.3.3| | 1 |
| Nearside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Central Rear Lower Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Front Steering headbearing has excessive wear or free play worn to excess excess play (2.2.2 (f) (i)) | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Front Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Central Front Upper Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Brake hose connection leaking banjo bolt loose (1.1.12 (c)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake fluid significantly below minimum mark |1.1.10 |d| |ii|| | 1 |
| Suspension component pin or bush excessively worn swingarm bushes |5.3.4 |a| |i|| | 1 |
| Nearside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies Brake switch broken. |1.3.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Suspension arm attachment bracket/mounting insecure |5.3.3 |a| |i|| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Front Clutch lever bent so it cannot be readily operated (6.2.7 (b)) | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm main bush |5.3.4 |a| |i|| | 1 |
| Valve stem seriously damaged front and rear (5.2.3 (j)) | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |