2012 S350 BlueTEC 4Matic (W221)
Picked up Saturday in AZ. 1798 miles home. 33.11mpg average for trip
Payson, AZ to Grand Junction, CO, 501 miles, 35.36mpg
Grand Junction, CO to Gothenburg, NE, 537 miles, 31.95mpg ( uphill stop/go traffic for 20 miles/90 minutes prior to the Eisenhower Tunnel )
Gothenburg, NE to Sioux City, IA, 300 miles, 32.22mpg ( heavy rain the whole day, enough on the road to hydroplane a 4800lb. car )
Sioux City, IA to northern MN, 460 miles, 32.81mpg ( 300 miles of heavy rain )

One owner, dealer maintained with an open checkbook. Oil cooler replaced ( not just the seals ), front air-matic shocks replaced when one was leaking.
Distronic Plus Cruise control. For 90 minutes in stop to 20 mph traffic going up hill to the Eisenhower Tunnel on Monday of Labor Day weekend, I did not have to touch the brakes or accelerator.

On the trip home, we stopped and picked up my 2005 E320 CDI that we drove to the airport. I drove it 160 miles home after driving the S350 for 1500 miles. It is not as quiet, (I can hear the engine), it is not as smooth on rough roads, but it is still a very nice car to drive.

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Greg
2012 S350 BlueTEC 4Matic
2007 ML 320 CDI
2007 Leisure Travel Serenity
2006 Sprinter 432k
2005 E320 CDI
1998 SLK230 (teal)
1998 SLK230 (silver)
1996 E300D 99k, 30k on WVO
Previous:
1983 240D, on WVO
1982 300D, on WVO
1983 300CD, on WVO
1986 300SDL 237k, 25k on WVO (Deerslayer)
1991 350SDL 249k, 56k on WVO - Retired to a car spa in Phoenix
1983 380 SEC w/603 diesel, 8k on WVO
1996 E300D 351k, 177k on WVO