You can't compare price per volume of different products!

Attention people who keep comparing the cost per litre of gasoline with the cost per litre of other consumer products:

IT IS NOT AN APT COMPARISON!

Different products are used in different quantities and for different things.

Water/coffee/alcohol/vinegar/perfume are used for completely different things than gasoline, and different quantities consitute a "serving".

Parallel comparisons: When baking, you use several cups of flour and only a pinch of baking powder. Therefore, a litre of flour will not last nearly as long as a litre of baking powder, so it doesn't make sense for them to cost the same.

I use a generous dollop of shampoo every day, but only a spritz or two of perfume on special occasions. Therefore, a litre of shampoo won't last nearly as long as a litre of perfume, so it doesn't make sense for them to cost the same.

In a typical day, I drink one glass of wine and several litres of water. Therefore, a litre of wine will last me far longer than a litre of water, so it doesn't make sense for them to cost the same.

If you must insist on comparing the cost of gasoline with the cost of other products, compare the price of how much you need to get through the typical day, not how much it costs per litre. A litre is meaningless as a basis for comparison.