I've noticed lower MPG when I fill my tank with costco gas in my Hyundai sonata. I have two other cars (not Hyundai) and they have no issues with this. I thought I was going crazy, then I heard a guy at work with a different model Hyundai talk about how he did not like to put costco gas in his Hyundai for that reason either.
Gas is expensive, and sometimes gas is about 15cents a gallon cheaper than anywhere else, but it does seem to go through the engine quicker for sure.
Does anyone else notice this at costco with their Hyundai?
What about any other gas stations?
Gas is expensive, and sometimes gas is about 15cents a gallon cheaper than anywhere else, but it does seem to go through the engine quicker for sure.
Does anyone else notice this at costco with their Hyundai?
What about any other gas stations?