Gas Mileage
Mercedes site recommends 91 Octane but the AMG site recommends 98 Octane. I'm sure the majority of you (if not all of you) are using 91/93 but I have a few places I can fill up around here with 98. Anyone try it and notice a difference mileage wise... and performance wise?
Last edited by jeanmarc; Oct 19, 2006 at 05:43 PM.
Mercedes site recommends 91 Octane but the AMG site recommends 98 Octane. I'm sure the majority of you (if not all of you) are using 91 but I have a few places I can fill up around here with 98. Anyone try it and notice a difference mileage wise... and performance wise?
As for milage... I'm getting about 11-13 mpg. Not very good but almost all my driving is short hops. (I only live 2 miles from my business) I have yet to take a long highway trip to see how far I can get on a tankful. So far with my short hop driving I'm getting about 300 miles to the tankfull.
I use 93 octane exculsivly. I'd love to try the 98 but there's no resource here.

I have a little over 2K miles on my ML63 and I have been getting around 12 mpg. with a mix of in town and some freeway driving and on a couple of longer trips right around 17 mpg. with very little "spirited" driving.
Great vehicle!!

I have a little over 2K miles on my ML63 and I have been getting around 12 mpg. with a mix of in town and some freeway driving and on a couple of longer trips right around 17 mpg. with very little "spirited" driving.
Great vehicle!!
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