On a 2004 Ford Excursion : ( 166.6 liters / 44.0 U.S. gallons )
16-20 mpg for the Diesel version of the excursion. 8-12 mpg for the gas version 5.4 liter V8
No, a spoiler for a 2004 Dodge Intrepid will not drop the gas mileage.
The Gas mileage for this car is 14 in city 21 to 22 highway.
The 2004 Infinity g35 does provide good gas mileage, in my opinion. It can run twenty-five miles on 1.25 gallons. I find this to be good gas mileage, but that may vary in other opinions.
The average gas mileage of an Automatic 2004 Dodge Stratus is 19 City, 21 Combined, 26 Highway. The average gas mileage of a Manual 2004 Dodge Stratus is 21 City, 24 Combined, 29 Highway.
Check out fueleconomy.gov
The gas mileage on our 2004 vibe ranges from 28-32 hwy, depending on your average speed. Over 60 the mileage drops dramatically, but this happens on all cars.
buy something smaller
According to the 2004 Ford Excursion Owner Guide ( 226.7 inches long )
My 2000 Excursion with the V10 will get 9.5 to 10 around town, and up to 15 on the highway.
According to the 2004 Ford Excursion Owner Guide : ( 44.0 U.S. gallons )