| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Rear reflector missing (4.8.2 (a) (ii)) | 21 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 11 |
| Stop lamp remains on when the brakes are released | 11 |
| Registration plate issues | 10 |
| Rear reflector missing |4.8.2 |a| |ii|| | 8 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 8 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 7 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 7 |
| Registration plate lamp issues | 7 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 4 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 4 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Headlamp aim not tested (4.1.2 (b)) | 3 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 3 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Handlebar excessively deformed (2.2.1 (c) (i)) | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Rear Brake fluid reservoir fluid level significantly below minimum level |1.1.10 |d| |ii|| | 2 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 2 |
| Headlamp insecure |4.1.1 |c|| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Central Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Steering headbearing excessively stiff or notchy stiff on right lock |2.2.2 |f| |i|| | 1 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake component inadequately mounted (1.1.21 (c)) | 1 |
| Rear Wheel has loose rivet/s or bolts (5.2.2 (e) (i)) | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected Sticking |6.2.7 |a| |ii|| | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Rear Brake disc contaminated Contamination from exhaust (1.1.14 (b)) | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Position lamp adversely affected by the operation of another lamp when indicators operated |4.2.3 |b|| | 1 |
| Headlamp insecure { lower support } |4.1.1 |c|| | 1 |
| Shock absorber has a serious fluid leak right hand leg (5.3.2 (b)) | 1 |
| Stop lamp does not illuminate immediately a brake applies not operating on front brake lever |1.3.1a| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Brake component modification unsafe mounting plate touching disc (1.1.21 (d) (i)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Horn not working |1.7.3a| | 1 |
| Offside Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Front Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Rear Brake lever mounting insecure |3.1.2a| | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Front Forks excessively deformed both (2.2.2 (d) (i)) | 1 |
| Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Horn sound not in accordance with requirements due to no bracket securing to body (7.7 (c)) | 1 |
| Brake lever has restricted free movement broken and jagged edge (1.1.15 (e)) | 1 |
| Exhaust silencer likely to become detached full system (8.1.1 (b) (ii)) | 1 |
| Offside Front Brake lever not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Rear Lower Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Direction indicator light intensity significantly reduced Headlamp and side lamps flash when indicators applied (4.4.3 (a)) | 1 |
| All direction indicators adversely affected by the operation of another lamp headlamp |4.4.3 |b|| | 1 |
| Stop lamp not working bulb fallen out of holder - re-fitted (4.3.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 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 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Motorcycle structure is so deformed it is likely to adversely affect braking or steering (6.1.1 (a) (ii)) | 1 |
| Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Roller brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working Control one (4.3.1 (a) (ii)) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Position lamp adversely affected by the operation of another lamp STOP LIGHTS ON WHEN LIGHTS ARE TURNED ON (4.2.3 (b)) | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement |6.1.8 |a| |i|| | 1 |
| Offside Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Central Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Central Lower Fuel hose insecure (6.1.3 (a) (i)) | 1 |
| Front Handlebar excessively deformed (2.2.1 (c) (i)) | 1 |
| Front Position lamp missing (4.2.1 (a)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Lower Suspension component pin or bush excessively worn shock mounting |5.3.4 |a| |i|| | 1 |
| Rear Brake master cylinder reservoir cap missing (1.1.10 (e)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Brake pedal so insecure that the brake cannot be readily applied (1.1.2 (e) (ii)) | 1 |
| Drive chain horseshoe locking device likely to become detached |6.1.7 |j| |ii|| | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm pin/bush excessively worn |5.3.4 |a| |i|| | 1 |
| Brake lever is bent and the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Front Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Headlamp aim not tested Insecure (4.1.2 (b)) | 1 |
| Nearside Clutch lever bent so it cannot be readily operated |6.2.7 |b|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Rear Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Nearside Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside 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 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Brake fluid not visible (1.1.10 (d) (iii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Stop lamp not working Front control. |4.3.1 |a| |ii|| | 1 |
| Rear Brake fluid reservoir fluid not visible leaking (1.1.10 (d) (iii)) | 1 |
| Fuel cap ineffective Vent tube missing (6.1.3 (b) (i)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Wheel bearing has excessive play Uni track lower link (5.1.3 (a) (i)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Stop lamp likely to become detached |4.3.1 |c| |ii|| | 1 |
| Rear Brake disc contaminated |1.1.14 |b|| | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Nearside Front Steering operation restricted in free movement from lock to lock clutch cable (2.1.4 (c)) | 1 |
| Front Steering operation linkage fouling when handlebars turned from lock to lock clutch cable (2.1.4 (a)) | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Handlebar excessively deformed |2.2.1 |c| |i|| | 1 |
| Rear Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Rear reflector missing no reflector fitted (4.8.2 (a) (ii)) | 1 |
| Rear Position lamp not working rear light not working (4.2.1 (a)) | 1 |
| Rear Drive chain excessively loose rear chain loose and worn out (6.1.7 (c) (i)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Suspension component modified so the suspension is inoperative (5.3.3 (c) (ii)) | 1 |
| Stop lamp not working when operated on front brake lever (4.3.1 (a) (ii)) | 1 |
| Handlebar deformed to the extent that steering is affected mounted offset to left |2.2.1 |c| |ii|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear suspension bush has excessive free play swinging arm |2.4.A2a|i|| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |