Hi I'm new here and have a question in regards to a 97 suburban 2500 4x4 with a 454 that I am considering buying. What kind of mpg is realistic under normal driving conditions? I think it has either 315/70/r17 or 305/65/r17 bfg atko for tire package. Looking at it as a extra vehicle that will be used mostly for family trips/trips a little further to get groceries and towing our sleds and boat. I've read that people get 13-16 out of it on the highway but from the past I only remember them getting 8-10mpg....

 

Welcome to the forum...

realistically mpg 12-17, in my 97 non 4x4 Tahoe, I got around 14 city 18 highway

 

With a BBC, I's lean more to 10-12 hwy and 8-10 in town. And that's in good tune.