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2016 E400 4Matic Sedan
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Mileages during my last two fill ups have been around 17.5 MPG. This is mostly stop and go traffic and A/C on some of the time.

I remember I could only get about 15.5 to 16 MPG this past winter. It seems the warm weather is reducing the fuel consumption. Does that make sense?

When I got my car last year, it was parked for two years. Could this impeoved performence coming from "revival" of the system. I did not start to use the 560 as the daily drive until last Nov. Since then, I "felt" the car is driving better and better.
 

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Depends on the day!
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Welcome to the BS world of winterized fuels.. IE, ethanol added as one of the Great gov't scheme's.. When you burn winterized fuel, your car "sees' excess oxygen in the exhaust and interprets that as a lean condition, thus injecting extra fuel lowering your MPG.

Also, driving a car regularly does help things..keeps any varnish from forming etc..in your case, slowly working through possible deposits.

Jonathan
 
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