Consumers have their own ideas about how much is normal and have sued several manufacturers in recent years over claims of excessive oil consumption, including Audi, BMW, Honda, Subaru and Toyota.
Subaru Takes a Crude Stance on Oil Consumption May 16, 2017 Subaru wants you to know that adding a quart of oil to your new engine every 1,000-1,200 miles is perfectly normal.
The problem: This revised service bulletin aims to address excessive oil consumption in some Subaru models, including the Forester, Impreza, Outback, Legacy, and Crosstrek. The problem lies within
Mimicking Subaru's oil consumption test, I checked the oil again at 1200 miles, and it had gone down, but it was hard to say if it was low enough to indicate the required consumption of 1/3 quart. However, later on, after 3000 miles, the oil level light went on and it was down a full quart.
The 2013 Subaru Outback has 21 problems reported for excessive oil consumption. Average repair cost is $1,590 at 45,800 miles. (Page 1 of 2)
Under these or similar conditions, you should check your oil at least every 2nd fuel fill-up and change your engine oil more frequently. If your oil consumption rate is greater than 1 quart every 1,200 miles or 1 liter every 2,000 kilometers, contact your Subaru dealer who may perform a test under controlled conditions.