Donald Noveau 
2015 BMW 3 Series Sedan 320i 4dr Sedan (2.0L 4cyl Turbo 8A)
Update on Gotta Have It?
 Yes, Gotta have it.    There is a real break-in period.  There are noticeable improvements in shifting smoothness ( 6 spd manual), although maybe it's me that is breaking in to the car.   This car is plenty fast (for me, anyway) and a great, quiet cruiser.   Just for fun, I reset the computer after getting on 95 for a trip up to NJ.  With a steady 70 mph on cruise control, the consumption was an average of 43 mpg over approx. 100 miles.  Granted, that is purely just a 70 mph cruise with no stopping or much accelerating, except for tolls and pit stops, but it is an eye-opener when you look at that display.  Around the suburban area where I live, the mileage hovers around 30 mpg.   My usual drive mode is 1st, 2nd, 3rd, then 6th gears, revving to about 3000-3500 in 1st and 2nd.  Not exactly a feather foot.Recently, at 20000 miles through an allowed 45000 miles on my lease, and halfway through the time of the lease, I took off and saved the run flat tires.   They will be reinstalled when I return the car.  The new Michelin pilot sport ps 3 plus all season tires make a huge difference, like going from square to round tires.   The rolling resistance is far less (I can push the car with one hand).  It is tranformed into a quiet, fast, road eater.  I added a can of slime and a small air compressor in case of a flat.  This is common on higher performance cars like the BMW M and some Mustangs. I highly recommend this change.