OK so I know 540is drink fuel moderately but I think mine has something wrong with it. I filled it up to 3/4 and after 2 days and not even 15 miles driving total it's at less than a quarter and the light is on for fuel. The headunit said the range was something like 400 kilometers and when I drive it drops like 10-12 kilometers for 100 meters I drive. What's going on it cannot be normal I mean sure it's a V8 but 4.4 lltrs and 282hp should be drinking like this. Help guys I'm confused.