FUEL TYPE?

  • Tiny
  • Mathmatic
  • 2011 BMW
  • 4,000 miles

I own a 1M and I was wondering if their is a significative difference in performance and fuel economy between the 91 octane and 94?

Tuesday, September 6th, 2011 AT 7:23 PM

1 Answer

  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,287 posts

Honestly, my opinion is that you won't notice a difference.

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Tuesday, September 6th, 2011 AT 7:37 PM

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