Hybrider Report post Posted July 20, 2015 (edited) I have never reset either my Trip 2 or the "Avg Fuel Economy" indicator (pics below) which is what the MPGs that are displayed on the Engage and Empower screens is referred to as in the Owner's Manuals. So in essence those displays do show my Lifetime MPG Average. The Trip 2 display does show a form of a Lifetime Summary for me. My "Lifetime Summary" (Trip 2) even shows total gallons used, being as it is a 2014. But as can be seen in the pic below, the miles do roll over every 10,000 miles and the EV miles roll over every 1,000 miles. But the odometer reading at the bottom compensates some for those rollovers.I reset my Trip 1 every time I fill-up with gas. And watching that MPG indicator on the Trip 1 display is the one best indication for me personally to know how efficiently I am driving. IIRC from what I have read on these FFH forums, the Lifetime Summary, which is only available on the 2013, can also be reset by either disconnecting the 12V battery or with a master reset or both. Edited July 20, 2015 by Hybrider Quote Share this post Link to post Share on other sites