I'm surprised about the warranty issue. My 05 also was a rental from Alamo. I've had no problem getting the warranty work done (just seat heaters and a dome light repair and I got the car with those problems) and I still have 3 months left on the original warranty as my car's in service date was 10/06. I also have the extended warranty as these cars are not cheap to fix. But then, I bought my car from a Chrysler dealer so that may have had something to do with it. They might be a little more liberal with those things than an outside dealer. Also, many people here have tried to have their cars serviced at a Mercedes dealer since the car IS a Mercedes mechanically and all have been refused. Find out their policy before you plunk down any dough.