I have a 2005 xrs with a little over 50k miles. After I purchased car I started to notice things that would point to the driver beating the heck out of the car. But my main concern is that a lot of other people are getting about 30mpg and with my vehicle I'm only getting about 21-24 on a good week. Should I be getting better mileage and car is just messin up on me or is it just the xrs get worse mpg?? Can someone please fill me in?