My wife & I have only managed to get 18.5, as our best mileage. We have not been on any long trips, to really get highway mileage. (5.3 flex fuel engine) I can tell you from other vehicles, same engine, same transmission, same rear end gearing, they won't get the same mileage. Every vehicle is different, just like personalities of people. They won't run the same speed, they won't get the same mileage.
Hey GM, where's my 19mpg?!
- Thread starter Armycop
- Start date
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