Eos is 2008. Driven carefully in four seasons.
We seem to have a couple of conflicting answers so I'll throw in mine! We had a company car driven like a bat out of hell by many drivers with no respect. That vehicle covered 150k miles and never used more than a drop of oil. The same model owned by a lady driver for local mileage had done 30k miles and drank oil like you were putting in gas!
I was very curious and after an engine teardown saw the problem: On first look at the cylinder bores I could still see the factory honing marks (No wear!). When I pulled the pistons the oil control rings were totally gummed up and stuck in the piston ring gaps. The cyl. head was cleaned up, new rings fitted and after the first 500 miles, her son was told to borrow the car once a month and drive it 'with attitude'. It never burned any oil afterwards.
The oil burning complaint for modern engines starts with their design: To achieve high mileage engine life, car pistons are cast oval with integral expansion metal and sit in round steel cylinder bores. As the engine heats up the oval pistons become round and a better fit. This avoids the 10 thou or so bore over size tolerance that older engins with round pistons used to have knocking 20k off the engine bore wear life. With these new oval pistons, if a car is babied and doesn't get regular long mileages at normal engine temperature, oil leaking past the pistons starts to gum up the oil control rings. Ask your local car rental company if they see this problem - I bet they don't!
After learning to change your driving habits, you can sometimes get improvement by using an engine cleaner additive and driving the engine hard on a long journey. But remember, if you bought a used low mileage car, the engine damage may already have been done by the P.O.
IMHO I would never wait for an oil light before adding oil. The warning level can vary and can be a lot more than the liter I would expect to replace. Running oil levels down lower increases sludge in the oil and reduces cooling. When you drive around sharp bends (with the low oil light lit) the oil pump can get starved of oil increasing engine wear and more oil burning.