Is it better for the scion to drive with the Overdrive on or off?

on if you want better gas mileage.

on if you want better gas mileage.

Yeah what he said. On is better gas milage while off is better performance. Now its over all up to you what you would want to do because it is your car.

When going uphill it helps to turn OD off. When going downhill, OD off can help control your speed and save the brakes.

Thanks a lot. :D