GMC Sierra 2500 MPG

34 GMC Sierra 2500s have provided 515 thousand miles of real world fuel economy & MPG data.
Click here to view all the GMC Sierra 2500s currently participating in our fuel tracking program.

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Shifting to neutral while driving a car is illegal in most states

I drove a Saab Sonnett III years ago. It had "freewheel" wh... ...

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