03-25-2012, 07:20 AM
I own a 2000 3500 w/ cummins 370 diesels. I don't have any electronic gauges that state fuel burn and my numbers are based on fill up and range. I routinely get over 1mpg and mostly around 1.2. The performance specs that Tiara published for this boat are pretty accurate. They state 1.2 mpg at cruise of around 30 mph.