Get detailed information on the best Porsche gas mileage cars with over 30 MPG and do side-by-side comparisons to help you with your new car buying. Research 30 - 40 MPG Porsche cars and fuel efficient 2014 2013 new cars with high MPG including EPA fuel economy ratings, miles per gallon, car prices, cost of ownership, safety, recalls, standard features, options, warranty, fuel economy, specifications, and more on any new 30 - 40 MPG Porsche car models. Click on the links below to find the right vehicle for you!