Originally Posted by ag4ever

While that might be the most fuel efficient method in a prius, I have found that in my TCH, the best FE is by staying on the highway and driving between 55 - 65 miles per hour. I have tried 45 MPH no stops, and tried "city" driving, but the best FE numbers I have ever gotten were from "light highway driving". I don't know why the TCH would respond so differently than a prius, but it looks like there might be a diference. It might be the fact that the Prius is lighter, making the FE numbers better for slow driving, or it could have somethnig to do with aerodynamics, but either way, I think slower highway is the best for a TCH.