GT MPG - First highway trip

[Stroked84]

My first tank in my GT/AT/3.55 was 90% highway driving (driving it home) and I averaged 23.4 MPG.

My last two fill ups have been 18.4 and 18.2 MPG. Honestly though I'm not disappointed. The traffic around here is terrible, so it's a LOT of stop and go mixed in with very spirited driving.

Comparing it to my roommate's ~13.5 MPG in his 2014 Camaro SS A/T under the same conditions with the same fuel, I'm happy.

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[RIBS]

Brand new off the lot, 500 miles GA to FL, varied driving, city to rural to highway, up to 85 mph. All stock GT, Auto, 19's 3.15 gear.
Averaged 26.1 on tank 1
Averaged 25.6 on tank 2
(Trip computer, no manual calculation)

 

[Cueball]

I do a lot of highway driving and hope for the best with stock 18" tires and 3.31 manual.

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