I have owned and leased BMW’s since 1992. My current lease is a 2014 X3 with the 2.0 liter twin turbo 4 cyl. It was a new lease after turning in my 2011 X3 with 3.0 liter six cylinder. After 5800 miles the mpg is still as miserable as day one; 15.7-17 city and 24 highway on premium gasoline, stop/start active, and driving mode set at moderate. What is disappointing is that my mileage with the six was better; 19 city and 28 highway. I expected near what the EPA sticker claimed: 21 24 28 but that doesn’t seem destined to occur. I had taken it in to my dealer at 2700 miles and he said to leave it for an evaluation after it was broken in after 5000 miles. We disagreed about break in miles. I am starting to write to BMW and the EPA about their false mileage claims. I see the EPA retested 2014 Mini’s and had BMW print up new Mulroney Stickers with lower claimed mileage. How’s the mpg on your X3’s?