Nope, take back to dealer.
Seems like the fuel tank sensor might have been stuck. Have it checked out
Also remember that the onboard computer needs a bit more data before giving an accurate estimation of distance left. Mine tends to only start getting close to a good average after 250km. Also I have noticed that the distance left is conservative.
The other problem might be that someone stole some diesel from your car
Probably had air in the tank from filling which has now escaped, how many liters did it take to fill the tank when you filled up yesterday compared to the tank size. Those trip computers balance and correct themselves constantly, what was your fuel consumption on the 5km you drove home.
Something is not right. Give it a tank or 2 to let it settle then take it back. Don't want them fiddling with a new car if not needed.
Thanks everyone
I went back to the dealership and the salesman told me that this is only the first tank of diesel and that the onboard computer still need to monitor usage and make calculations. According to them I should give it another 1000-2000km and will then be able to see if there are any other problems. Whether this is correct or not, I do not know, I never bought a new Ford before, but may well be.
When I took delivery of the vehicle, the tank was just above a quarter and the car has a 52l tank. I threw 28l to fill it up. When leaving the garage and driving 5KM to my house it showed full. The computer also estimated just over 700km distance I could drive.
This morning when I started the vehicle, the tank was at 3-quarter and the computer estimated 560km range.
I do not think anything got stuck. As we drove to the dealership the diesel is still coming down. In fact, I now drove about 60km since filling up and the tank is just below 3-quarters.
@Pitbull, I agree, I did not want any fiddling at all. If there is a problem, I need the vehicle exchanged or want to be refunded.