Just joined the site as I'm starting to get really upset about my mileage on my 2013 Cmax....I have 16,000 kms....or 10,000 miles on . It has been cold for a long time up here in Calgary, Canada (averaging -4F in the daytime) but I'm average 29 MPG in the city...7.9 L per 100km. During the summer, the best I could do was 6.2 L per 100km or 37.9 MPG. Something seems to be wrong having read all of the awesome MPG for other users....