Yes perfectly Fine. I am getting the same mileage. Also I want to highlight one thing which I have noticed about ECON. It is design to improve in city (upto 80Km/Hr) mileage by changing driving style of vehicle, I don't think so it has any significance on Motorways or above 90 or 100km/hr. If you notice, with econ On, car very smoothly accelerate to 80km/hr. after that you have to push paddle really hard to go over 100 km/hr speed and hence it reduces mileage. Whereas if you run your car above 100km/hrs with Econ off, I found it to be more fuel efficient.
Its just my observation and may be many people disagree with me but that is what I have feel after driving 30000 km.