My 2016 is beginning to guzzle gas at a concerning rate

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May 28, 2020
New owner as of last April of a 2016 Etron.

When I bought it, the gas range was pretty on point. If it said I had 150 miles, sure enough Id be able to drive for 150.

Then in August, it all changed after I took it in for a tuneup. Now if my car range says 150, its only worth 90 or 100. Thats a big price break. I took it back to Audi twice to diagnose it, but they found no defect, leak, or anything.

My only theory is that I changed the gas I was using to fill up. Originally, I was using 89 regular for a few months until I realized it takes 91-95 gas. I started filling up with 91 as around the same time as that tuneup, and thats when the Audi began guzzling gas.

Any other theories? Kind of sucks to pay for premium gas that burns up 35% more.

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