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S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

27 MPG

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Old May 14, 2011 | 09:18 AM
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Depends on the day...
27 MPG
Put cruise on 80 and drove from Pensacola Florida (150 foot elevation) to North Carolina (3,500 foot elevation), a total of 450 miles. Average fuel economy was 27.5 mpg. I am ecstatic!
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Old May 14, 2011 | 10:37 AM
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Congratulations. The 5.5 liter is a real economy car when driven at a consistent pace on the freeway. I drove a little slower (60mph) and got 16% more, or 32 mpg from NC to Nashville, TN in my previous S550.
Last edited by dbtk; May 14, 2011 at 10:43 AM.
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Old May 14, 2011 | 10:43 AM
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I even took a picture...
Attached Thumbnails 27 MPG-s550-32-mpg-i.jpg  
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Old May 14, 2011 | 03:24 PM
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07 S550, 08 Escalade, 08 H2
was that on a hybrid?
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Old May 14, 2011 | 03:42 PM
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Not bad at all...assuming it wasn't the hybrid.I wonder what the Bluetec will do on the Interstate.Mine gets up into the low 40's (per the computer,that is) so the S Class would likely get up into the mid 30's,if not better.
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Old May 14, 2011 | 07:11 PM
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Depends on the day...
Originally Posted by Ahmedito
was that on a hybrid?
No, it's a 2008 SL550.
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Old May 14, 2011 | 11:31 PM
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I can even get 28mpg on my 2010 Bluetec GL. Not as good as the E but respectable for a heavy 7-passenger SUV.
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Old May 15, 2011 | 01:52 AM
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A Mercedes obviously!
Have you tried doing a proper calculation though, rather than relying on the computer? I had a 700 mile drive the other week and according to the trip computer I averaged about 23mpg+ from my 600. But when I filled up and got my phone out it was more like 20.5
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Old May 15, 2011 | 08:18 AM
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Depends on the day...
Originally Posted by Fraser
Have you tried doing a proper calculation though, rather than relying on the computer?
I'll do that next time I’ve got any appreciable distance to travel and we'll see. Thanks for the input...
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Old May 15, 2011 | 10:31 AM
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I don't think i ever achieved 20mpg since i owned my S550
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Old May 16, 2011 | 05:27 PM
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a toy
These cars are amazing on the highway. I get 27mpg in the CLS on roadtrips, and a little over 25 in the S550. Pretty damn well for such heavy cars with decent power.
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Old May 17, 2011 | 12:34 PM
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Originally Posted by squerly
No, it's a 2008 SL550.
Really? I haven't been able to get past 23mpg average in my car... bizzare!
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Old May 17, 2011 | 05:02 PM
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Depends on the day...
Originally Posted by gyzmo123
Really? I haven't been able to get past 23mpg average in my car... bizzare!
Yeah, but look at that beautiful thing... something tells me you're not loosing sleep over the gas milage.
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Old May 19, 2011 | 03:33 AM
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I average 28MPG, one full tank with a few gallons to spare when I got home from Irvine, CA to San Jose. Non-stop drive. 80MPH speed.
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