Took my 15 Diesel to Minneapolis over weekend from Indy area, went thru Chicago area. Haven't filled yet, filled one time on way back in Wisconsin at 800 miles on that tank, looks like over all economy at 48-49 mpg. Car performed near perfect. Time for an oil change, down to 3%. Diesel just loves the open road. I think total miles driven was around 1300 to 1350 in three days. Was at some fuel station and it was late and some guy in an Esclade asked me if it was diesel then asked if it was German. Chevrolet needs to advertise and educate folks they have the most efficient non hybrid non electric on the market. I get compliments frequently and almost no one knows they exist. If I would slow down and not stop I am confident my car would go 1000 miles to a tank. So far my driving doesn't work for that. I don't think you could regen much to get that and no city driving. Last regen went for 1016 miles on this trip.