Sourcing applicants have rated the interview process at SpaceX with 4 out of 5 (where 5 is the highest level of difficulty) and assessed their interview experience as 100% positive. To compare, the company-average is 53.4% positive. This is according to Glassdoor user ratings.
Here are the most commonly searched roles for interview reports -
easy HR interview, manager interview, director interview, and then invited on site for 6 person panel interview with a presentation required. the questions are varied from person to person so it doesn't get repeated