Do people really follow the 20/4/10 rule that strictly?

No judgment if you don’t, truly.

I imagine people who are enthusiasts probably spend more than this on their cars.

It struck me while looking at some sports cars online that a new MT Toyota GR86 is about the limit of my income (income is $170k) according to the 20/4/10 rule.

That suggests to me that it’s pretty likely most people don’t follow this rule, or do you all think that they mostly do?