Went to Powell with friend's Tige, my SX and Fest's S22. I can't remember the exact numbers in gallons but Fest got the best mileage. Tige man, Fest and I drove about the same amount one day, and I used about 1/3 less gas than the Tige did. Fest did even better than that. I'm not sure which engine he has in the Tige, but I don't think it is even the biggest gas guzzler in the Tige line. One qualification to this, the Tige was running with the wakeplate, but fest and I did not have ballast filled. Still, most of the driving was wakeplateless, so it may not have made much of a difference. Also, I get much better mileage in the SX with the 3-blade ACME than I did with the 4-blade that was previously on it.
When we boat with out neighbors, we get about twice the mileage of the neighbor with the 24 fooot Chaparral and about the same mileage as the one with the 17 foot inboard, outboard.