which is better for fuel economy vdc on or off???

 

vdc on is for safety not really for fuel economy. There are questions of whether VDC cuts off fuel or not, but even if it does, there is no economy in cutting fuel for a split second to a few seconds. just leave it on and drive like a grandma if you wanna save gas...

 

I've been trying both ways,and really haven't noticed any difference to speak of

 

If VDC ever has to intervene, I'm guessing you're not getting the best mileage.

If you drive in a more sedate manner to conserve fuel, VDC will never do anything.