| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 27 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 18 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 17 |
| Stop lamp remains on when the brakes are released | 12 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 12 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 12 |
| Rear reflector missing (4.8.2 (a) (ii)) | 10 |
| Front Brake excessively binding (1.2.1 (f)) | 9 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 8 |
| Stop lamp not working (4.3.1 (a) (ii)) | 8 |
| Headlamp aim not tested (4.1.2 (b)) | 7 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 7 |
| Registration plate issues | 7 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 6 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 6 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 6 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 6 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 5 |
| Rear Position lamp not working (4.2.1 (a)) | 5 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Horn not working (7.7 (a)) | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 3 |
| Front Brake grabbing severely (1.2.1 (c)) | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 3 |
| Rear Position lamp likely to become detached (4.2.1 (c) (ii)) | 3 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Rear Footrest missing (6.2.12 (a)) | 2 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Registration plate lamp issues | 2 |
| Nearside Rear Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 2 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 2 |
| Rear Brake component modification unsafe cable nut not sufficiently engaged on thread on cable (1.1.21 (d) (i)) | 2 |
| Handlebar mounting insecure play in handlebar rubber mounts (2.2.1 (a) (i)) | 2 |
| Steering operation fouling on the fuel tank or bodywork on full lock yoke hits tank on right hand lock (2.1.4 (b)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Brake pedal so insecure that the brake cannot be readily applied Return stop missing (1.1.2 (e) (ii)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Motorcycle structure is deformed and structural rigidity is significantly reduced (6.1.1 (a) (i)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Pillion seat with a defective supporting structure (6.2.6 (a) (i)) | 1 |
| Headlamp light intensity severely reduced dipped beam and full beam (4.1.4 (a)) | 1 |
| Front Shock absorber has a serious fluid leak Both front fork seals leaking (5.3.2 (b)) | 1 |
| Rear Position lamp not working Tail light (4.2.1 (a)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Rear Position lamp likely to become detached tail light (4.2.1 (c) (ii)) | 1 |
| Pillion seat with a defective supporting structure (6.2.6 (a) (i)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Nearside Rear Pillion seat with a defective supporting structure Foot Rest . (6.2.6 (a) (i)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Rear Brake clevis joint insecure (1.1.15 (c)) | 1 |
| Front Brake lagging in operation (1.2.1 (d)) | 1 |
| Drive chain excessively tight, so that it is likely to fail and excessively corroded with siezed links (6.1.7 (k) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak forks (5.3.2 (b)) | 1 |
| Front Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Central Front Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Front Stop lamp not working stop lamp does n0t work on application of front brake (4.3.1 (a) (ii)) | 1 |
| Central Front Horn not working (7.7 (a) (ii)) | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Central Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Horn not working horn replaced (7.7 (a) (ii)) | 1 |
| Stop lamp not working Front brake switch? (4.3.1 (a) (ii)) | 1 |
| Drive chain sprocket excessively loose Securing nut missing on rear sprocket (6.1.7 (c) (i)) | 1 |
| Rear Brake rod insecure SPLIT PIN MISSING (1.1.15 (c)) | 1 |
| Rear Suspension component pin or bush excessively worn Swinging arm (5.3.4 (a) (i)) | 1 |
| Nearside Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Suspension component ball joint excessively worn Swingarm to frame (5.3.4 (a) (i)) | 1 |
| Footrest missing Pillion (6.2.12 (a)) | 1 |
| Engine mounting/bracket missing Nut missing (6.1.8 (a) (ii)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Brake fluid contaminated (1.8 (a)) | 1 |
| Roller brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front switch (4.3.2 (a) (iii)) | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Handlebar mounting so insecure that steering is adversely affected (2.2.1 (a) (ii)) | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced rear sub frame bolts lose and 1 missing (6.1.1 (b) (ii)) | 1 |
| Direction indicator not working left hand (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working both (4.3.1 (a) (ii)) | 1 |
| Upper Fork yoke insecure Fork clamp bolts missing (2.2.2 (d) (i)) | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Front Position lamp lens seriously defective melted. (4.2.1 (b)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen damaged lense & bulb falling out. (4.1.2 (a)) | 1 |
| Offside Front Stop lamp not working intermitant, (4.3.1 (a) (ii)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect No beam pattern. (4.1.2 (c)) | 1 |
| Nearside Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working rear lever (4.3.1 (a) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Throttle operating incorrectly Raises tick over on lock (6.2.7 (a) (i)) | 1 |
| Motorcycle structure is so deformed it is likely to adversely affect braking or steering Front fork bent (6.1.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls front lever not operating (4.3.2 (a) (iii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Brake cylinder damaged (1.1.16 (a) (i)) | 1 |
| Rear Stop lamp not working not working on rear brake pedal (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Brake master cylinder defective but brake still operating (1.1.10 (b) (i)) | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Rear Brake component insecure (1.1.21 (c)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock forks hitting tank on right lock (2.1.4 (a)) | 1 |
| Clutch lever bent so it cannot be readily operated (6.2.7 (b)) | 1 |
| Rear Brake excessively binding pedal not returning (1.2.1 (f)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Central Front Lower Steering headbearing has excessive wear or free play excessive free play (2.2.2 (f) (i)) | 1 |
| Offside Front Upper Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Central Front Upper Position lamp not working (4.2.1 (a)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Decelerometer brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Stop lamp not working from front lever (4.3.1 (a) (ii)) | 1 |
| Suspension arm pin or bush excessively worn swinging arm bushes . (5.3.4 (a) (i)) | 1 |
| Central Front Exhaust has a major leak of exhaust gases o2 sensor snapped (6.1.2 (a)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Front Shock absorber has negligible damping effect both front shockers (5.3.2 (b)) | 1 |
| Rear Brake pedal insecure return stop insecure ; danger of linkage coming out of cylinder (1.1.2 (e) (i)) | 1 |
| Front Stop lamp not working for front brake (4.3.1 (a) (ii)) | 1 |
| Throttle operating incorrectly revs rising on lock to lock (6.2.7 (a) (i)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Stop lamp not working front brake light switch (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls Front brake light switch not operational (4.3.2 (a) (iii)) | 1 |
| Rear Brake cylinder has no reserve travel and braking performance affected (1.1.16 (e) (ii)) | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Shock absorber has a serious fluid leak Both (5.3.2 (b)) | 1 |
| Stop lamp not working From front brake control (4.3.1 (a) (ii)) | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Offside Front Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Headlamp aim not tested unable to start engine ,lights not working without engine running (4.1.2 (b)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Footrest missing rear footrest not attached (6.2.12 (a)) | 1 |
| Headlamp aim not tested dipped beam not working (4.1.2 (b)) | 1 |
| Handlebar mounting insecure rubber mountings worn to excess (2.2.1 (a) (i)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Stop lamp not working on foot control (4.3.1 (a) (ii)) | 1 |
| Front Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen incorrect beam pattern (4.1.2 (a)) | 1 |
| Stop lamp not working Rear Control (4.3.1 (a) (ii)) | 1 |
| Rear Wheel more than one fixing missing Wheel Spacer (5.2.1 (a) (ii)) | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Rear Wheel fixing loose (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Stop lamp not working both switches (4.3.1 (a) (ii)) | 1 |
| Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake servo inoperative (1.1.10 (a) (ii)) | 1 |