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4 cycl mileage problem

3094 Views 1 Reply 2 Participants Last post by  GMCpower, 
C
I have a 2011 Terrain 4 cycl with 5,000 miles. I am getting combined 22.8 mph per the on board computer and got 25.6 highway on a recent trip. That is a far cry from 32 mph that GMC advertises. What should I be expecting?
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G
Not sure why your getting nearly 10 MPG's less than what GM advertises. Either GM is wrong or it's something your doing. Whats your driving style like? Were you carrying a lot of stuff in your Terrain?
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