bamachevy89
Full Access Member
Just made the drive from Greenville, SC back home to Birmingham, AL (about 4 hours) going between 70 and 75 the whole way in my '04 Tahoe LT (40k miles) and averaged 20.7 MPG, which topped my personal best of 19.2. I didn't believe it at first, but I filled it up when I got home and it was accurate. No mods or anything, everything is factory. Can anybody beat this??? I'm still amazed, my wife was following me in her '07 and averaged 19.6.