Just be aware that your ride will get harsher, and you will lose some grip particularly in wet/snowy/icy conditions. Also conditions and weather matter. In NY at this time of year, you're probably not going to have much luck getting 50mpg.
1) You are certainly into Winter Blend at this point, which has less BTUs per gallon, and thus lower fuel economy potential
2) Cold weather also significantly reduces your fuel economy potential
That said, you should still see an improvement, but since it's a percentage increase of your average mpg, it will be less drastic numberwise than what it might be during the spring, summer, or fall.
Also remember that what you do off the interstate can be even more important than what you do on the interstate. If you drive 5 miles with an average of 30mpg...it's going to take a lot of interstate driving over 50mpg to pull up your average to above 50mpg. Generally, you're only going to post above 50mpg in a Mk6 during the spring, fall, and possibly summer (depending on AC use).
For example last year my average between Sept and March (inclusive) was below 50mpg, and only in the spring and fall can I consistently post averages above 50mpg. In the Summer, AC use will shave off enough to drop me below 50. Even though I'm often only running the AC one way on my commute.