Does each bar stand for 1 gallon?

[Driver]

Originally Posted by PetersRedYaris

I fill up when the last bar begins to blink. Usually takes just under 10 gallons. The 07' U.S. hatchback tank holds 11.2 gallons, so your safe from running out. I don't know fuel compacities on other years/models. Filling 10 gallons makes fuel consumption calulations very easy. For instance; 345 miles between fills = about 34.5 MPG. 380 miles = about 38 MPG. Simple!

You should really never let you tank get below 1/4 (two bars) full. That keeps all the crap that gathers in the bottom of the tank from getting in the engine. I've done this with every car I've owned and the Yaris manual even suggests that you don't let it get lower than 1/4 full.