Your mileage may vary...
Those of you with few miles on the ticker may not get the optimum mileage. Also, whatever your dealer did before you got the keys may factor your LMPG (ours had 250 mi. on the odo, and a 28 LMPG! First thing I did, I reset it to have a TRUE history of OUR driving the Insight). As I have posted elsewhere: We usually just acelerate rather heavily to our target speed, THEN start feathering the throttle if mileage is our goal. Only use "S" if we want to go boogety boogety (merging, passing, etc.), otherwise, we just let the rubberband tranny use its ESP to get us where on the speedometer we want to go. Our best mileage on our 2001 Insight CVT came after 3000 mi. or so. I had the Rostra cruise installed, it helps us a lot to maintain a set speed, but it is not that super on mileage (I can anticipate hills, feathering the throttle on the way up, cutting out totally on the down side for the desirable "150 mpg", etc.). Also: Your best mileage is in town with few stops (if you time the lights right), under 50mph. Regardless: We have 50 pounds all around, a/c on econ. since day one (set on 70 and NEVER turned off), lots and lots of highway miles (70+ mph is our usual cruise), and our LMPG is ~54+. Our best: 68 mpg in KS, heading E with a tailwind, no cruise, few hills if any, and 200 mi. without a stop. Bottom line: Punch it to get up to speed yhen ease up, 50 pounds in your tires, and wait 'til 3000+ miles on the clock.