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Before I started commuting it was 25.6 mpg for about 33,000 miles. Now that I commute 20 miles a day each way, it has dropped steadily to 24.5 mpg, and with my normal tank average now about 21.5 mpg, I expect it will continue to drop until I make a long trip again. Nothing like filling up and driving the entire tank without stopping at freeway speeds for pumping up the all time average.
Im in the 18-19mpg range. instead of going up its going down. also im driving it from 2-3 hours a day in the week and the weekend a little more. but i love driving my car so gas is no headache for me even with freaking overprice. .
Ps. i have 14600 miles since dec 06.
23.3 mpg on my 250 with 5000 miles on it. During the weekdays its about 90% freeway but only going 20-40 mph, so I may as well be on surface streets. Then on weekends its all city. And of course there is the AC during the warmer months. I have steadily watched my mpg drop the hotter the months get. My last car was a 4 cyl Accord 5 speed MT and in 37k miles I averaged only 24.6 mpg. Thats why I was afraid to get the 350 being that I know no matter what I drive Im going to get bad gas mileage out of it.
Mine is between 29.2 ~ 29.7 mpg on the 250RWD. I drive 70% freeway / 30% city, maybe that is the reason. Every fill up I can go up to 455 miles with 15+ gallons.