A little more information please ( size of engine , automatic or manual
transmission , rear wheel drive or 4x4 )
The 1999 Ford Ranger ( SuperCab ) holds ( 19.5 U.S. gallons )
Check out www.fueleconomy.gov
The 1999 Ford Expedition gets about 16 miles per gallon at its very best. On average this vehicle gets 12 miles per gallon in city traffic.
The Ford Ranger pickup truck equipped with a 2.5 liter turbo diesel engine has a MPG rating of 19 miles per gallon in the city and 24 miles per gallon on the highway. The actual miles per gallon is dependent upon several different factors.
Check out www.fueleconomy.gov
A 2002 Ford Ranger Edge can hold up to 16.5 gallons of gas. The Edge gets 17 miles per gallon in the city, and 21 miles per gallon on the highway.
You have a 1999 Ford Ranger 3.0.
Inspect at 120,000 miles , replace if needed ( Ford maintenance and the Gates website ) for the 2.5 liter , 4 cylinder , in a 1999 Ford Ranger
According to a website I was looking at : A 1999 Ford Windstar , 3.8 L gets : ( 21 miles per U.S. gallon on the highway )
That all depends on how it is driven.
Around 22/27 2.3 (best 4 cyl)
approx 20 miles depends on cylinders