HELP!!!!!
 

Hi

Today we decided tobuya 300SDL that is about 80 mileswhere we live, after buying the car and heading homewe fill both our 300SDL and 300SDwith a full tank of gasand we headed of, after commingback home i decided to checkmy fuel levelsfor both of the cars now for the300SDL have aprox3/4 tank of gas left....but when i check on my 300SD i only have 1/4tank of gas left!!! I know that 300SD are very fuel efficent carsbut this one is not... What can i doto stop my300SD from guzzling down the diesel....

THX