Terry,
Personally I think you already have a great car with the new Civic EX and as Xcel has suggested, take a little time to learn how to stretch your mileage.
Take my wife for example, who has increased our Grand Caravan from upper teens to mid 20's MPG with only a modest effort.

I bought my hybrid only after the current car became undependable, 10 years old and ugly. I needed a vehicle capable of transporting my entire family otherwise I'd surely have bought an Insight.

Efficient drivers do it better.
1003 miles a tank personal record. 74MPG calculated. HCH1 CVT