I am looking to buy a 4-door sedan for my girlfriend. We are looking at the Chevy Malibu and the Subaru Legacy.
The Subaru has all-wheel drive. That is something to consider if you plan to drive down dirt roads (she lives on a ranch in Dripping Springs) or if you have to go to work during bad weather (snow, ice, rain).
The only domestic car that has available all-wheel drive is the Dodge Charger RT. It has a V8 so the gas mileage won't be great, but it's a fun car!
Good luck!