2013 v6 low mpg

[Silver_5ohh]

Hey guys I’m currently getting about 9.3 mpg on my 2013 v6 mustang. I’ve taken it to get looked at, at a local mechanic shop and they couldn’t find the issue. I’m thinking I might have a bad O2 sensor but I’m not sure.

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[Torched10]

Are you using e85 gas

 

[Silver_5ohh]

No. I’m using 87 octane.

 

[ORRadtech]

Really anything we have to say would be a straight up guess based on generalization. Without data you may as well load the parts cannon and hope for a hit.
You need to hook up a good scan tool and check fuel trims upstream and down stream O2s, etc to do some proper troubleshooting.

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