Should I do it??

I say no. If you have $25,000 you can get a nice 4 speed 70 Challenger or something that will be worth the same or even more in a few years if you want to sell it. You might not be able to get the 25mpg but at least it's value won't drop like a rock.

Then again if I had 25 grand laying around I'd be spending it on some real estate investments while the prices and rates are low.