How many gallons of coolant is needed for 2002 Toyota Echo?

The 2002 Toyota Echo typically requires about 1.5 to 2.0 gallons of coolant for a complete fill, including the radiator and the reservoir. It's always best to consult the owner's manual for the exact specifications and to ensure you're using the correct type of coolant. When performing a coolant change, it's also advisable to check for any leaks or issues in the cooling system.