07' Focus - 11.2L/100KM Fuel Usage?

[steambao]

Hi there

I recently bought a used Ford Focus Zetec 2007 (February Model). I still have two months of dealership warranty.

Over the last 3 weeks I have driven about 800km around Melbourne - mainly along 70km/80km zones with a couple of stop start areas.

I have managed to get an average fuel consumption of 11.2L/100km and can't get it any lower!! A day worth of driving costs me like $15 :(

I showed my friend and he wiped the inside of my exhaust and it came our sooty black and mentioned I was 'running rich'?

Do you think I have a case to get it fixed under my Warranty from the Used Dealer (a Authorised Ford dealer in fact)?? What about other Ford Focus Zetec Owners, around the 07 Era. What is your Fuel Consumption?!?!

Any help would be appreciated