Uhm.. in a week.. hard to tell, I think around 35 liters (9 US Gallons) in normal driving mode, 60 or more if trashing the car I guess (16 gallons)
Here fuel is around 1.34 Swiss francs / liter = 1 USD/liter
So in an average week I think I spend around 35 USD in fuel...
But I have to say I never really paid attention, so I'm only guessing
