I recently purchashed a 2012 Hyundai Elentra and was very impressed.  One of the main features I was looking for in buying a car was the fuel efficiency without giving up to many features of a sedan model.  The Elentra caught my eye with it's 40 highway MPG and 29 city MPG.  It lives up to it's word.  It only takes about $40 to fill up the tank so it does have a small tank but I only have to fill it up about every two weeks and I have to drive somewhere just about everyday. 

The fuel efficiency wasn't the only thing about this car I like.  It came pre-equipped with XM radio, free for 3 months.  I never believed in satellite radio but it is definitely worth it and I plan on continuing the service.  On top of that the hands free is most probably the most useful feature next to the Eco system.  The hands free bluetooth allows me to hit a button on the steering wheel and say a command such as "Call Anthony" and it'll dial the number and talk to the person without even having to lift your cell phone.  To use it you must have a cell phone that is bluetooth compatiable of course but most new cell phones have that capability. 

Even though this is my first car, I've driven others and they still don't compare to the spectacular performance that the Elentra performs.  With it's 6 speed transmission, great MPG, and 4 cylinder engine I don't see myself driving anything for a long while.