text: They are a franchise, and therefore, supposed to be essentially the same throughout anywhere they are established.  The ONLY difference I've noticed in McDonald's in the US and other countries is that the US is (I think) the only country that does not use the metric system.  Therefore we have "quarter pounders".  Other countries don't use the "pound" in their weights and measures system.  So, for instance, if you were to go to France and order a "quarter pounder with cheese" they would look at you funny.  In France, it's called a "Royale with cheese".  That is the ONLY difference I've seen though.  As far as the taste of the food and if there are any differences in taste and quality, nope..they're all the same.