Dodge Eco diesel opinions

have a friend that has had one for about a year and he really likes it. He was always a Ford man until this one. I have a 2014 2wd quad cab with hemi and I love it. I have 50,000 on it and it averages 21-22 mpg which I can't believe. With the price of diesel and extra costs to service I would get her a gas burner and she can find gas at every station