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Yes, it's definitely possible. When I bought my 2013, I had no idea what oil was in the car but it burned about the same as you, roughly 1,500 - 1,700 miles before a quart was needed. I changed the oil to Mobil 1 0w-40 and immediately had some improvement in mileage, I think around 2,000 miles. By the next couple oil changes the interval between needing quarts increased even more. Now I'm only adding a quart once between oil changes. I add 1/2 a quart at a time. I theorize the change in oil brand and weight is the reason and that it took a few changes to flush out all of the "old" brand/weight.
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