30 miles per gallon on average in mostly city driving averaging 30 miles per hour or less/stop&go.
Jazz (Fit) is rated #6 in Europe in terms of reliability by a warranty company. Few problems reported on Truedelta. Consumer Reports rates reliability high. No long term test I have read has had any issues.
Honda has a known reputation for lasting without issues. I owned a Honda Civic in the past and never had any issues over 70,000 miles of driving.
The new Honda Fit only cost me a hundred dollars more for insurance then my 10 year old Toyota Solara. Every report suggests the Fit will have a high re-sale value when compared to other cars.
Seats in the back fold down flat and can hold 57 cubic feet of stuff or about 3-4 times more then the trunk of an Accord or a Camry.