According to the display, it was 40.9 mpg over 711 miles. However, according to my odometer calibrations, this is actually 735 miles. Using 735 miles and the amount of gas added, it calculated to 41.6 mpg. Over the course of all my fillups, my fuel economy using the calibration factor on the odometer is almost exactly the same as the lifetime display fuel economy. So, I believe 40.9 mpg is more accurate and my higher calculated number is just from first click variations.

Anyway, this tank was all suburban driving from August 1 to August 23. Weather was very nice and the driving was almost all mine. The only other driver on this tank was Chuck (Delta Flyer) for about 10 miles. I only drove the HiHy when my wife and I both needed vehicles, otherwise, I drove the HCH II.

One funny thing to note, now by best tank in the Highlander is better than my worst tank in my HCH II. On a tank in the HCH II driven from January 11 to February 1, 2007, we only managed 39.2 mpg over 393 miles. Of course, it is worth mentioning that it was one of the snowiest and coldest January's in Denver's recorded history.