In US we might as for it using one of these two words alone or together: Soda. Pop. Soda Pop. Most often people use "soda". Any flavored carbonated non-alcoholic drink but not seltzer waters.
Cola refers mainly to two brands: Coca Cola. Pepsi Cola. Cola can be used like this regardless of brand, "Do you have any cola drinks like Pepsi or Coca Cola?". Dr Pepper is considered a "cola". Cola has brown color, never orange , clsar, etc.