I bought my FZ-S Black Cyber Green in Dec 6 2011- In the first week I ride at below 40 km I got the mileage of 50.3 And 20 dec ( after 2 weeks) I riding at below 50 km, got the mileage of 53.4.
Points to increasing mileage:
Shifting of Gear
Maintaining the Speed below 50km before first Service
To Avoid Unusual clutching & Throttle Usage
Trust me, you should not compromise through anything while riding this. Just lie down it as u can and enjoy d ride