Just wondering if the OP, and others, are utilizing Eco-Pro mode and/or Auto Start/Stop much? I'm a week into owning my 2013 X3 35i and the Auto Start/Stop is still freaking me out every time it engages. I can't get past the feeling the car died. Anyway, I'm still sticking with it to see how the mileage compares over time.
Currently: 2013 X3 xDrive35i - Deep Sea Blue / Nevada Black, ZAP, ZDA, ZDH, ZPP, ZPS, ZTP, Heated Seats, Cargo Net