It should, generally speaking, Nissan replaces engines as a "long block", so the head would be installed from factory- and hence the gasket. Its a good thing they are making good on the warranty. Sometimes even with the best cars, a couple bugs happen.
The HR16DE in our car is a typical low cost/high production engine and used in thousands of vehicles.
It is normal for engines to consume some oil between changes. How much is normal depends on the engine itself. The SR20DET is almost famous in some circles for consuming 1lt per 2500km while others have very little. Varying tolerances from engine to engine can make this a a head scratcher for some.
That being said, your issue is not normal in the least.
Last edited by Howie; 01-18-2015 at 02:16 AM.
View my fuel log 2015 Micra S automatic: 7.9 L/100 km ... 35.7 mpg (Imp) ... 12.6 km/L ... 29.7 mpg (US) ...