Hi all I got an average of 7.7km per litre on mine from it's first tank. 640km in total. How accurate is the computer in working out the range available on the diesel in the tank. My fuel light came on with the computer saying that I still have 80km to go. That works out to about 36mpg. Will this get better as the car gains milage. I do a lot of stop go driving. Douw Johannesburg, SA