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?
Just purchased a new '15 F25 X3. (48mi at delivery) The current mileage is 1195mi. Same 2.0 liter twin turbo 4 cyl. I'm getting 22.1 in town and 26.1 highway on premium fuel. The mileage was lower until I started using Top Tier Fuel and that increased it. toptierfuel.com Maybe that will help.
. Sorry to hear you're disappointed with your new X3. We too traded our 2011 F25 X3 28i (3.0) for a 2013 F25 X3 28i (2.0T). We really like the new one. The 4-pot isn't nearly as smooth or refined as the inline six but, in our experience the drivability improved with the turbo. We found pretty quickly though that the gas mileage was highly dependent on right foot and cruising speed. Cruising at 75+ mph initially only returned 22-24 mpg. It began to improve after about 3-4,000 miles but now, after 32,000 miles we still see only about 24-26 at 75+ mph. We were in the Colorado Rockies a month ago on two lane roads running 65-70 mph. We averaged 28-29 mpg over 2000 miles. And, the car rocked in the Rockies. Around town we use Eco-Pro pretty routinely. If she's driving it averages 20-22 mpg in town (regardless whether it's fed 89 or 91 octane gas). With me, more like 19-20 mpg in town. Strictly top-tier gas, whenever available. We've been leasing cars for quite a while too. In our driving, none have routinely provided gas mileage quite up to the stated estimates. Oh well . . . .
Additionally we drive in the comfort mode all the time currently. We have not taken a trip longer than 50 miles yet. I will try out eco-pro on the open road but in town it's doggie. Also premium fuel in my are is all 93 octane.
EPA mileage ratings are tested without EcoPro engaged. I'm told average speed for the EPA highway cycle is just over 55-mph.
