Have had the car for 3 months. This is what OnStar says:
Hard Braking 102
Hard Acceleration 79
Late Night Driving 2.5%
Distance Driven 3729
*Average MPG 43.0
*Average MPH 23
*Speed Over 80 MPH 0.0%
*Idle Time 18:56:05
I love this thing.
Hard Braking 102
Hard Acceleration 79
Late Night Driving 2.5%
Distance Driven 3729
*Average MPG 43.0
*Average MPH 23
*Speed Over 80 MPH 0.0%
*Idle Time 18:56:05
I love this thing.

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