Make & Model 55 mph 65 mph 75 mph Acura TSX 2.4-liter 4-cyl. 39.9 mpg 35.5 mpg 30.7 mpg Honda Insight 1.3-liter 4-cyl. 51.9 44.8 36.5 Lexus RX 350 3.5-liter V6 30.9 27.4 23.0 Mercury Mountaineer 4.6-liter V8 23.8 21.2 17.8 Toyota Camry 2.5-liter 4-cyl. 40.3 34.9 29.8 Toyota RAV4 2.5-liter 4-cyl. 34.6 29.3 25.9 Toyota Yaris 1.5-liter 4-cyl. 42.5 37.9 34.0 Most of us here are very mpg aware, so out of curosity, I found this table in an article from Consumer Reports magazine. It shows the difference in mpg in driving at different speeds. Only these cars were listed , but you can see some take a huge hit at faster speeds. Every time somebody brings up the idea of changing the interstate speed limits back to 55 , there is a major outcry from almost everyone. My question is at what point would people quit yelling " drill baby drill" and be willing to cut back on speed to conserve fuel? I know a lot of people on this forum drive slower than the speed limit, but we are not the norm. Who would be willing to drop the speed limit to 55 to conserve ??