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YouNotRHart
Guest
The first 150 miles on my new C6 Z51 6Spd has been dismal: 15 MPG avg. While coasting at 40-50 mph, it only goes up to 67 mpg (instantaneous). Is this normal? My 2000 Z51 driven similarly got over 20 mpg in similar, mostly non-highway driving with some power use. :confused Unfortunately I won't know if it improves until spring, it's put away for the winter. :cry