Washed it once a week for the first couple of months I had it... brought it down to every 2 weeks during the summer since we have some water restrictions.
Full interior clean every 3-4 weeks and tire shine every 2-3 weeks.
Plan to wax 4 times a year, so I am just about due for it.
DGM like most dark colours seems to show dirt/dust after 2-3 days and it drives me nuts. This is my first brand new car and I want to keep it looking that way for as long as I can.
I've spent way too much on car care stuff but it's so worth it to drive around in a pristine vehicle