I know noone here is impressed with the MPG of the VX and for good reason. However, the best time to think about this is before you buy. I think the best you can do is maybe a few miles more per gallon without a major change such as a Diesel swap like is being attempted on another string here. However, if you end up paying $5000 for even double mpg or sell you VX for a more efficient vehicle and end up getting new car payments are you ahead. Even if you double your MPG to 30 from a consrvative 15 mpg what do you gain? For every 10000 miles you drive instead of paying $666 for gas you pay $333 (est $3 a gallon) That is a savings of $333. You do not break even until you have gone 150,000 miles. (Someone check my math) And this is best case scenarion like you have the $5000 sitting around or you get 0% financing for the payments. Even still you lose the interest you could earn off the money. This is a problem I have with enviros (noone here please dont yell at me) they say get rid of all current cars and replace them with Hybrids. Well what do you do with the current cars (toss them in the dump) and how do people afford the new cars that are $30000 a pop when they cant afford new cars now at $20000 a pop?