Honda Civic VTi gives better fuel efficiency. As you go for the newer models, the fuel efficiency increases. The 9th gen is more fuel efficient than the 8th gen, the 8th gen more fuel efficient than the 7th gen.... because newer models incorporate newer technology or are more streamlined and efficient.
On a side note, an automatic will consume more fuel than a manual.
P.S you ride is the 7th gen non-VTEC civic