What would cause my VW CC LUX LIMITED 2012, 2.0 Turbo to be using oil...

What is your question?

It is using the oil NOT leaking oil. I have oil changed at VW dealership, using the correct oil and filter. The oil is black before you can turn around. Car has 140 thousand miles on it. They have replaced the Timing cover that did not correct problem. They also did something with the turbo that was another $545.00 bucks and that did not change anything. The car makes no noises and no leaks as of now, Thank you, Linda

What makes this problem better or worse?

It stays the same. Im putting at least a quart and half in a week of oil in it.

How long has your 2012 Volkswagen CC had this problem?

Since about 100 thousand miles.