I hate to give out bad news but I can tell you that this car will average not much more than 35 MPG for most every day drivers. The Gen 9's only average 33 MPG based on 5+ million miles reported on Fuelly. Based on testing/EPA, Gen10 gets 1 MPG higher city and 3 MPG higher HWY on 1.5L, so it will probably be 35 to 36 MPG among most drivers, with a slight edge for highway drivers.
So I would not expect much more than this unless you do exclusively highway driving or you use grandma and hypermiling techniques. This car is not a hybrid and doesn't have any stop/start, so its going to get heavily affected by acceleration's and city driving.
That being said, 35MPG average is very nice for a 3K lb non-hybrid, and best in class, even better than the i-Eloop Mazda 3 (which uses capacitor and brake energy recovery to get 2MPG more).