BMW E53 X5 3.0i Fuel Economy Capabilities

[tecboy99]

What do you other manual guys get for MPG on the highway? Doing 75 in 6th gear, I can't seem to get the MPG gauge to go above 20. It has been awhile. But, I seem to recall the auto doing better. Makes me want that 3.64 diff swap even more.

[srmmmm]

Originally Posted by tecboy99

What do you other manual guys get for MPG on the highway? Doing 75 in 6th gear, I can't seem to get the MPG gauge to go above 20. It has been awhile. But, I seem to recall the auto doing better. Makes me want that 3.64 diff swap even more.

75 MPH is at 2750 RPM for me with the automatic. The aero factor really seems to come into play at that speed though and my mileage averages 19-20 MPG. As long as I keep my speed around 70 MPH and RPMs at about 2500, I have no trouble getting 22+ MPG.

2002 X5 3.0 293,400 miles
2014 428i 14,200 miles

2004 325i sold at 123,600 miles
2001 325i sold at 66,000 miles

[tecboy99]

Damn, maybe I should start copying Green Dragon. A 10mpg bump would be nice.