My first experience with a HCH was driving to New Orleans. I set the cruise between 75 and 80. My mileage according to the dashboard was in the mid-thirties. On the way home I had the cruise around 70 and the mpg was in the mid-40's. I have now owned my own HCH since August and you can see my overall mileage below. The last tank was easily the best at almost 55 MPG calculate.

Billy