i don't see a measurable difference until 2004 when the larger more efficient V6 was put in the car...
http://www.fueleconomy.gov/feg/calcu...1&id=19739
if driven correctly, that car can get 30+ mpg on the hwy. around town you need to really pay attention to traffic if you want to see decent mileage.
fyi, i go by the old EPA estimates for mpg. again, driven correctly, these numbers can be achieved, and even surpassed by conscience drivers.