Calculate whether the savings on your shopping offset the car trip.
If you drive to a cheaper supermarket but need to add extra kilometers, part of the savings may disappear.
It is worth it when the savings on your shopping are greater than the cost of driving there. If the supermarket is far away or the savings are small, it may not be worth going by car.
This calculator does not compare catalogs or product-by-product prices: it is meant for a quick estimate when you already have a rough idea of how much you might save.