[SentraSE-R]

I drove 7238 miles last month on a cross-country trip in my Scion, and got my best mileage in the mountain west (going both directions)

My worst mileage was in the flat lowlands of the southeast, from Texas through Louisiana, Mississippi, Alabama, Georgia, and Florida. I attribute that to E10 fuel, having to run the AC, and using cruise control a couple of days.

All-in-all, I averaged 44.7 mpg over 35 days. My best day I got 59 mpg in the morning driving 165 miles from Gallup NM to Tuba City AZ, and 50+ mpg in the afternoon continuing on to St. George UT - a total of 54+ mpg avg over 370 miles. I averaged 51.5 mpg for the last 1213 miles from Gallup back to the Bay Area. The best roads were long downhills. Even if I couldn't keep my speed up coasting down them, I was able to gain mileage on every downhill pulse and glide cycle - more than I lost climbing the uphills in the first place. On one memorable downhill from Donner Summit to Reno, I averaged 75 mpg for 40 miles.