Some of the default numbers in the calculator do seem high to me, but that's not the point. Not owning a car does save a lot of money. Do you own calculation with your own numbers if you are skeptical. I linked to this one because I think it is comprehensive.
Not owning a car does save a lot of money.
Can I save more money by not owning a Lamborghini? How about if I don't own a yacht, can I save a few millions that way?
This forum declares it is in favor of raising the sanity waterline. The linked-to calculator lowers it.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.