1995 legacy 2.2 automatic, awd, 160,000, all stock.... I own 4 2.2 legos... All get around 22 mpg average. A few weeks back my son noticed he was dumping more gas in more often than normal. Had him check the gas mileage over a full tank.... 13.7 mpg. Also, it seems to be lacking its previous get up and go.... Sluggish, but not horrible. I have had the cat converter suggested.... What other likely culprits are good starting points? No engine light, by the way....
Thanks!