Subaru XV 2013: High oil consumption?

There are no standards as such, and each carmaker determines how much oil consumption is acceptable for their own engines. There are reports of excessive oil consumption on Subaru models, including the XV. American owners have launched civil action against the company alleging problems with piston rings are causing the problem. Subaru is replacing piston rings on affected vehicles in that country. Do the tests they request and then work out a solution once the results are known.