This is my 2013 328i with the turbocharged N20 4-cylinder engine and a little over 60,000 miles on it. The engine has been getting M1 0w40 since new. After an oil change, oil consumption gas always been increased for the first 1,200 miles. The engine goes from consuming about 0.7 qt over the first 1,200 miles to consuming just half a quart over the remaining 6,300 miles. This engine has a single turbo, double VANOS, direct injection. I always drive the car about the same. It's not like I take it out to the track and race it for the first 1,200 miles. There's an electronic oil level gauge with min and max marks, 1 quart apart, no conventional dipstick. This behaviour is reliably consistent. What are possible explanations?