SL/R231: Very Impressed With The Gas Mileage....
09-15-2019, 03:22 PM
#1
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Very Impressed With The Gas Mileage....
I have a little over 600 miles on the ‘19 SL550 and my son and I took one of our mini rallies this morning on back country winding roads. I drove the SL and he drove his new Mustang GT. Total of 260 miles. On the way back we decided to get on I-10 for part of the ride home. In that 46 miles I averaged 79 mph going with the traffic flow and recorded 25.8 mpg. Wow, that is only a small amount less that the ‘2017 Sl450 I traded in. I am very impressed with this gas mileage especially at those speeds!!! 
P.S.- Yes that is with the top closed. It is 96F here today.....
P.S.- Yes that is with the top closed. It is 96F here today.....
Last edited by Utopia Texas; 09-15-2019 at 03:25 PM.
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SLclass (09-15-2019)
09-15-2019, 05:10 PM
#2
That's odd. Are you sure you're using the V8 correctly? 
09-15-2019, 05:32 PM
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2019 E450 wagon: 2019 BMW 430i: 2013 Chevy Traverse: (departed)2013 SL550 & 2019 E450 cab
This past spring I did a Florida trip in my 550. On one 600 mile leg I got almost 26 mpg averaging 79 mph. Not bad mileage at all.
09-15-2019, 06:04 PM
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09-17-2019, 08:33 AM
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me: 2015 SL400 & 2015 ML400; wife: 2022 GLC Coupe kid: 2017 GLC SUV
different animals obviously but I remember my time in a 2006 CLK350, thinking it was the economical choice. when circumstances arose that necessitated a quick replacement I was wary about the only CLK available to me that week, a 2009 CLK550 but it turned out do have better fuel economy than the 6. at +/- 80 mph the six struggled to get 21 mpg while the 8 easily got 27+.
