Also, I only can get 380km in 48Liters gas. Is it poor gas consumption??
You are more or less in the lower end of the ballpark (abt 8km/litre), but it depends on your driving style and combination of city/highway driving.
I get anywhere between 400km to 490km from 44 litres of gas (that's like approx. between 9 to 11km/litre) but I drive the car a lot - be it in the city or highway.
My kid brother consistently gets about the same fuel mileage as you do and he basically drives to the office and back on weekdays - lots of short trips.
We both drive the 190E 1.8 Euro, which are RHDs.