Gas Mileage Sample: 2011 E550 4Matic
I believe the trip computer gets confused if it travels on the slightest bit of a downhill slope. Anyway my daily average is 21mpg cruising @70mph all highway driving.
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When I brought the car home driving some limited access highways and some streets with traffic, it showed 21.7.
I think EPA's new estimates are about right.

The E550 is NOT better than the E350 MPG-wise. Not in the City, and not on the Highway, although they are closer than one might expect.
BTW, I got my first near-30 MPG on the Highway tonight. It was inching there, and I'm sure it would have made it, had I had more room to go. I'm hoping that this is a sign that with a more broken in motor (passed 8K Miles), and summer Gas blend, MPG's will be going up (already have been it seems).




Went 485 miles and filled 19.5 gallons after that. Almost all Interstate going 78 mph.
Last edited by listerone; May 9, 2011 at 07:49 PM.
Milage continues to get better as it breaks in. Total miles on the car at the start of this trip was about 10k.






