gas mileage

Recently, I have been recording the miles driven and the gallons of gas in order to see what my 2003 Protege 5 is getting in gas mileage these days. Very rarely do I drive on the highway, most of the miles are city. So, I am getting between 18 and 20 miles per gallon with the widows up and the...

Hi I just purchased a new 2009 Mazda RX8 R3 edition. The vehicle still only has 1700 miles on it. Right now I'm averaging 12.5 mpg in mixed driving (city and highway). This is well below the estimated 16city 22 highway. Does anyone have any suggestions or advice? I would GREATLY appreciate it...