2013 Nissan Versa 1.6 SL 4dr Sedan (1.6L 4cyl CVT)
Although I like the comfort and style, the MPG rating is way over rated.
Driving it on the highway and city mixed I get 26 MPG.
I reset the average counter, drove 75 miles on the highway with cruise control @ 60 mph and still under 30 MPG.
This is a common complaint.
How many miles are on your car?
You will not see any significant MPG changes until the car hits 7-8,000 miles.
You are still breaking in the car and it will take time for the MPG to get where it should be.
It also depends on if you live in a cold climate.
Fuel blends play a factor in MPG as well.
Be patient, although you won't get anywhere near 40MPG.
That is unless you drive 55MPH everywhere you go.