I know people who get Starbucks every day. I know people who would literally kill a man for the coffee from Dunkin' Donuts. But in a new study, neither of those brands had the most loyal coffee drinkers in the country.

Nope, that title went to McDonald’s.

Really. In the study, only 29% of McDonald's coffee customers said they go to Starbucks or Dunkin' Donuts for coffee or breakfast even ONCE a month.

For both Starbucks and Dunkin' Donuts, 53% of their regular customers admit they roam and have coffee or breakfast elsewhere at least once a month.

The firm behind the survey says they believe the biggest reason for McDonald's success is the cost. Their cheapest coffee is at least 50 cents cheaper than either of the other two places.