| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 33 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 18 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 16 |
| Registration plate lamp issues | 13 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 12 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 11 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 10 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 9 |
| Brake hose damaged | 9 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 8 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 7 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Registration plate issues | 7 |
| Front Brake excessively binding (1.2.1 (f)) | 7 |
| Front Position lamp not working (4.2.1 (a)) | 5 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Headlamp insecure (4.1.1 (c)) | 4 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 4 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 4 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 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 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Exhaust system insecure (6.1.2 (a)) | 3 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 3 |
| Brake hose excessively deteriorated | 3 |
| Fuel cap ineffective seal missing (6.1.3 (b) (i)) | 2 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 2 |
| Rear Brake lagging in operation (1.2.1 (d)) | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front Brake hose excessively damaged (1.1.12 (b) (ii)) | 2 |
| Offside Front Position lamp not working (4.2.1 (a)) | 2 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Nearside Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Central Front Brake excessively binding (1.2.1 (f)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Nearside Front Direction indicator not working bulb replaced (4.4.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 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 |
| Front Fork yoke modification unsafe (2.2.2 (e)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls rear brake does not operate the stop lamp (4.3.2 (a) (iii)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front Brake effort inadequate at a wheel Front brake lever is touching handlebar grip before the brake has locked. (1.2.1 (a) (i)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Front Brake caliper has no reserve travel and braking performance affected (1.1.16 (e) (ii)) | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp aim not tested Dip beam not working |4.1.2 |b|| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Exhaust system insecure (6.1.2 (a)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Nearside Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Rear Lower Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect bulb holder fitted upside down (4.1.2 (c)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Offside Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Exhaust has a major leak of exhaust gases Vacuum pipe (6.1.2 (a)) | 1 |
| Headlamp light intensity severely reduced bulb dim dipped beam (4.1.4 (a)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected pitted in centre position (2.2.2 (f) (ii)) | 1 |
| Nearside Steering damper ineffective (2.1.4 (d) (i)) | 1 |
| Rear Brake lever has insufficient reserve travel rear brake (1.1.2 (a)) | 1 |
| Stop lamp not working by front brake application (4.3.1 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Stop lamp not working from front brake (4.3.1 (a) (ii)) | 1 |
| Headlamp lens seriously defective (4.1.1 (b) (ii)) | 1 |
| Rear Brake lever insecure nut missing (1.1.2 (e) (i)) | 1 |
| Central Front Motorcycle structure is fractured and structural rigidity is significantly reduced (6.1.1 (a) (i)) | 1 |
| Central Front Motorcycle structure is fractured and structural rigidity is significantly reduced front mudguard broken replaced (6.1.1 (a) (i)) | 1 |
| Front Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Suspension component pin or bush excessively worn engine to frame bush/pivot (5.3.4 (a) (i)) | 1 |
| Front Lower Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Motorcycle structure is fractured and structural rigidity is significantly reduced engine casing (6.1.1 (a) (i)) | 1 |
| Front Steering operation linkage fouling when handlebars turned from lock to lock lockstop damaged on left hand lock (2.1.4 (a)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Nearside Front Brake hose excessively damaged (1.1.12 (b) (ii)) | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Offside Front Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Position lamp switch does not operate in accordance with the requirements (4.2.2 (a)) | 1 |
| Handlebar mounting insecure |2.2.1 |a| |i|| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock Steering stops deformed/not working correctly. (2.1.4 (b)) | 1 |
| Central Motorcycle structure is deformed and structural rigidity is significantly reduced centre stand insecure (6.1.1 (a) (i)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake pipe excessively damaged (1.1.11 (c)) | 1 |
| Headlamp aim not tested bulb blown |4.1.2 |b|| | 1 |
| Rear Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Front Brake hose damaged and likely to fail (1.1.12 (a)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Front Inner Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Nearside Brake lever has insufficient reserve travel Rear brake. (1.1.2 (a)) | 1 |
| Rear Lower Suspension arm pin or bush excessively worn Swinging arm bush (Engine end). (5.3.4 (a) (i)) | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Central Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Nearside Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Steering headbearing excessively stiff or notchy Headstock bearings excessively notchy (2.2.2 (f) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Offside Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Front Brake disc contaminated Oil from front forks (1.1.14 (b)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Upper Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal failed (5.3.2 (b)) | 1 |
| Stop lamp not working rear brake |4.3.1 |a| |ii|| | 1 |
| Nearside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Front Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Stop lamp not working not working from front lever |4.3.1 |a| |ii|| | 1 |
| Central Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Riders seat insecure does not hold or lock |6.2.5 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 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 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Stop lamp not working front lever |4.3.1 |a| |ii|| | 1 |
| Offside Footrest missing |6.2.12 |a|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 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 |
| Rear Suspension arm attachment bracket/mounting insecure |5.3.3 |a| |i|| | 1 |
| Nearside Front Handlebar grip missing |2.2.1 |d| |i|| | 1 |
| Rear Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Nearside Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Central Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Central Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Stop lamp not working front brake light switch not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Wheel fixing missing (single fixing) Incorrect rear wheel nut fitted thread not engaging nylock (5.2.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake hose bulging under pressure pipe has rubbed and is now bulging (1.1.12 (d)) | 1 |
| Rear Exhaust has a major leak of exhaust gases exhaust has split in it |6.1.2 |a|| | 1 |
| Front Steering headbearing excessively stiff or notchy steering head bearings very notchy |2.2.2 |f| |i|| | 1 |