If you *want* better mpg, you'll only get it by slowing down! I've done the variations, and it is the number 1 influence on mpg. This car does NOT get good hwy mpg. I went for a 140 mile strict hwy drive last weekend, 62 mph actual, 36.3 mpg indicated. Driving 40 miles stop-and-go commute to work this week, 55 mph top speed, I showed 36.0 mpg. I topped 41 mpg indicated one saturday, driving 5 under the limit to work.