I am getting under 30 MPG on my 2012 Hyundai Elantra while doing 55 MPH on the highway and using cruise control. They respond to your emails with big promises, but then they just disappear and think that you will magically become a satisfied, and silent, customer. I'm neither satisfied nor silent. I estimate that I have steered at least 15-20 people away from Hyundai and I will try to warn as many people as i can in the future.
Actually constructing the car to get within even 10 miles of the gas mielage that the manufacturer states that you will get.