Fuel Efficiency and the Yaris

[KrazyDawg]

What's the optimum speed for driving on say a flat road? Would it be 55 MPH? Less? If anyone has a scangauge, I would be interested in the numbers. I have a 6-7 mile section in my commute where the speed limit is 50 MPH but there are stop lights.

[Yaris Hilton]

Originally Posted by KrazyDawg

What's the optimum speed for driving on say a flat road? Would it be 55 MPH? Less? If anyone has a scangauge, I would be interested in the numbers. I have a 6-7 mile section in my commute where the speed limit is 50 MPH but there are stop lights.

For most cars under steady state, level ground conditions, maximum mileage is found in the vicinity of 35 MPH.

[Kal-El]

Originally Posted by KrazyDawg

What's the optimum speed for driving on say a flat road? Would it be 55 MPH? Less? If anyone has a scangauge, I would be interested in the numbers. I have a 6-7 mile section in my commute where the speed limit is 50 MPH but there are stop lights.

And that's unfortunately where we waste most of our gas - every time we have to stop. Getting back up to speed is the killer.

I'd estimate that the Yaris achieves between 45-55 mpg if it is kept very steadily at 40 mph on a level road with no head wind.