13IS250C Posted March 12, 2014 Share Posted March 12, 2014 I'm at almost 11k miles now, and my gas mileage just keeps getting better! Now that I'm burning 93 octane instead of 89, I'm up to 25 mpg average on my display. I'm really pleased with that considering the stop and go driving I do. I also have a bit of a heavy foot at times. :whistles: Quote Link to comment Share on other sites More sharing options...
LEX-SV Posted April 7, 2014 Share Posted April 7, 2014 That's good mileage. My IS350 gets about 21-22 in mixed city/suburban/freeway driving. I always use premium 91 octane Chevron gasoline. Quote Link to comment Share on other sites More sharing options...
13IS250C Posted April 9, 2014 Author Share Posted April 9, 2014 Your premium is only 91 octane? Wow!!! It's 93 here. Quote Link to comment Share on other sites More sharing options...
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