I realize you may be geeked for the Sebring, but don't buy a Chrysler. I worked in the industry closely with DCX, and no Dodge/Chrysler is worth owning. Don't do anything with them other than a low mileage lease.
Any money you may save on the up front purchase price is due to the low resell value of them. And you'll be spending $1k+ in repair bills soon enough every six months. For the AC compressor. For the water pump. etc. don't buy it.
Pony up the extra money to get a reliable car; it'll save you money in the end.
edit: and the fact that it was a rental is even worse.
interesting, my wife and her mother both own sebrings and combined they've had oh... ZERO repairs in the last decade on them besides oil changes... so I guess they lucked out. My wife gets closer to 28-30 MPG on it.
although, i have a cirrus that I got for free as a work car... it has had problems galore... I've never had to make any repairs at a repair shop... they are issues I can live with or fix myself...
my wife's sebring... model of a quality car so far. bought it in January 2004 and have never, not even once, had a repair on it.
I think this is true of most car types though. You will have your success stories and your lemons. I just know two sebrings that have been perfect cars. Our cars go through MN winters, which is ridiculously bad on automobiles... and they have been great.
about the rental car aspect, every car until this last one for me has been a rental car. It's all I ever buy (except out current two good cars). I've never had a problem with a rental car purchase.