Ever since I've had the eco, my gas mileage has always been around 14-15 miles per gallon. The only time it really goes higher than that is when I'm on the highway. I live in Woodbridge Virginia, and there's lots of traffic congestion so that may be a factor but I'm still not sure if that's a normal rate for city driving. In terms of driving style, I definitely take off quick and drive fast, but I've read members say they put their foot into the gas and still get 17-19 mpgs. I have a K&N drop in air filter, and use 93 octane gas. My car is the base model, automatic no performance package, and I always drive in D. So far I have 5,400 miles. Is this gas mileage normal?