""1.8L I4 engine's total capacity for an oil change with filter replacement is 3.9 U.S. Quarts (3.7 liters)"" this would all depend on what you are doing, if you are just trying to top up then maybe you will not need all of this, but if you are gonna do a full service , oil filter etc then that would be the recommended needed amount. There can be many reasons to this, if it is recent i recommend try to take it back to the dealership and have it checked out if possible before you start spending more funds.