Is there any cause of heavy oil consumption on this car experienced by other owners?

Excessive oil consumption with the Forester is a known issue. Google it. I had 32,000 miles on my 2012 Forester and it was using oil. Dealer was great. No charge on the consumption test. I was using the equivalent of 28.5 oz per 3600 miles. Subaru said 32 oz was excessive. I kept at it and last week took it in again. Subaru is replacing the engine. No new car should use oil like that. I will give Subaru credit for standing behind their vehicle and doing the right thing.

Subaru finally admitted that Forester burned excessive oil. See the following: https://www.torquenews.com/1084/subaru-settles-oil-consumption-lawsuit