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Re: Winter mpg - What do you get?
08 GXP gets about 19.5 avg in the winter, in the summer it gets about 25.4 avg. Thats with a displacement on demand 5.3l V8.
05 Tahoe gets 15.3mpg avg in the winter, in the summer it gets about 16.7 avg.
Winter definately affects mpg badly.
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