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So it sounds like everyone is reporting ~15-17 city (ish) and 20-25 highway (ish) without any of the newer AFM.
According to Chevy, the displacement on demand system should net ~20% better mileage so we might estimate the 5th Gen would average 17-19 city (less of a benefit in the city with all the start/stop) and 24-30 highway... which isn't bad at all!
~LSx
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