You'll need to find the specific engine and drivetrain of the 2007 Town & Country you're interested in to get the accurate MPG figures. Once you have those, you can use the following formula:
* Range (City) = City MPG x Fuel Tank Capacity (gallons)
* Range (Highway) = Highway MPG x Fuel Tank Capacity (gallons)
The fuel tank capacity is typically around 20 gallons, but it's best to check the owner's manual for the exact number. The owner's manual will also have the correct MPG ratings for your specific vehicle.