Actually, I think they are using "MPGs" instead of "miles per gallon" not only because they think customers are too stupid to know what MPG means, but also because the "MPG rating" uses an outdated EPA mandated test that has been thoroughly debunked by Consumer Reports, and has no realistic correlation to real-world fuel efficiency. The EPA ratings have "city" and "highway" ratings, but the test measures steady-state conditions only using a formula that has been proven to grossly over-rate many vehicles vs. what they get in actual use.