I filled mine yesterday and had 16.9 mpg. Thats a little better than normal. It usually runs 16 to 16.5. That is a combination of city and highway driving about 50/50. The tires are about 1/2 inch taller than stock. I am going to be going back to stock rims and tires this weekend. Biju gave me a killer deal on the tires he had. So maybe in the next week or so I will be able to tell if there is any difference with such a small difference in tire size. At one point just after I bought my VX the mileage was down to 12.5. I took it to the dealer for the 45,000 service and they did the EGR/PVC service but also cleaned the fuel injection. The mileage jumped almost 2mpg. When they switched our fuel here to the summer blends (less ethanol) it jumped almost another 2 mpg. I got rid of a Honda Accord with 22mpg for this, but I love it.