[SheaButter]

I don't particularly think it matters how much you make. If your real goal is to find out a financial status for affordability I would ask the ratio that correlates how much an individual saves per month with their car payment (cash buyers don't really matter. Plus it's rarely better to buy a car cash, fiscally speaking).

For example I make around 3.5x more than one of my close friends who has an M3, and on a monthly basis he saves more since he lives at home still, whereas I have 2 mortgages and 1 rent payment. So technically speaking he can afford an M3 more than I can.