I have a 2014 sDrive28i, commuting distance is 100 miles per day. My drive consist of 20% city, 20% flat freeway, 60% mountain freeway (climb up to 3,200 ft elevation and down).
Eco-pro and auto start/stop is always OFF.
Mileage as of February 25 is 14,300mi. MPG avg (trip computer) is 28mi
My recent long weekend drive of 700mi, 90% freeway, 10% mountain pass, MPG avg is 34. I drove between 70-75mph and engaged cruise control when able.
For fuel, I use 91 octane and either Shell, Chevron, or 76.
As for comparison, my previous car was a 2007 328i sedan. With the same daily commute, my MPG avg was 23 mi the entire time until I sold it at 60k miles.
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