Why does your 2006 Chrysler Sebring get bad fuel mileage?

The Chrysler Sebring is the worst car on gas milage i have ever had and for being a 4 cylinder i will never buy one again

I recently purchased a 2003 Chrysler Sebring, 4 cyl. 73,000 original miles, great condition inside and outside. I paid $5300! So far, it gets really good mileage! The only problem I have encountered, so far, is that, after idling for several minutes, the car dies out. Seems to be a common problem, regardless of the year. Also, when the car is below 1/2 tank of gas, the gauge doesn't read properly. I've run out of gas twice with no warning! Bummer!