Quote:
Originally Posted by Twix
How many miles do you have on your X1? I get 24+ on the highway with my xDrive 28i. I typically do 75-77 mph. As your engine breaks in, the mileage will go up. Even with JB4 installed, I did better than 29mpg. If you have the factory oil in the car, that seemed to get me the best mileage by removing it at about 2400 km (2000mi) or so.
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I just passed 12k miles and had the first service a few months ago. Maybe my car is an outlier but there seem to be a lot of people like me. I think 33 fwy is a fantasy unless you can drive a steady 55.
I should note I'm in California. Maybe our gas sucks. Currently winter blend so we can revisit in a few months.
Second note - I previously drove a Mercedes c250 rated at 31 mpg fwy that regularly hit 33-35mpg on the freeway. Apples to apples comparison - same commute.