Quote:
Originally Posted by leasehackr
Have you experienced low mileage with Costco gas?
In the last 5-7 years, I always filled up at Chevron and saw 3-4 miles/gal increased in the mileage vs Costco gas. This was a long time ago when I did the comparison.
We got a new Costco opened up around 5-7 min driving from my place and I started filling up from Costco for my old F15 40e and 530e.
Just picked up 2021 40i and 2021 530i yesterday. Was curious to know based on your experience should continue at Costco for fill up?
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Not as far as I know. Other than when out of the area I use it exclusively. Just checked the other day and I am at 24.6mpg overall since it left the factory which seems good.
Costco fuel is TopTier so it has all the detergents recommended by the manufactures.