Quote:
Originally Posted by Vai
I have a 2013 2LT RS V6 and it started out with good gas mileage... Around 25mpg Highway and city mixed. That was WI h Exxon regular gas. Now that all Exxons are closed in my area I put Lukoil regular. I found that mixed driving gave me 15mpg. I filled up again thinking it was my driving because I do have a lead foot. I drove very carefully and all it degraded even more (13mpg).
Thinking it may be the fuel, I tried BP supreme gas. This is giving me 14.3 now. I've been trying different gas and range and all are around 13-15mpg with me driving very carefully. The car is not modded in any way. Could there be a mechanical issue?
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Take it to the dealer. Sounds like it isn't station related.
To try out new gas, you'll need to use them a few times. So give BP a few more runs. Also, see if the highway MPG changes.