Nothing I own gets exceptionally good mileage, but I can usually beat the EPA combined estimate for my 98 Sierra driving short-trip in an urban environment. My past few tanks have been really poor though because I've been using 4wd a lot in the past 2 months because of all the snow we've been getting in the DC area. My 86 C-10 does really bad, but we're just thankful it still runs. Its parked at my parent's house and dad only drives it to the hardware store and to the landfill. My 81 Regal would probably do a lot better if I ever drove it on the highway anymore, it only runs short trip city now. If I take a highway trip I always drive the 98 Sierra.