Had a screener followed by four separate interviews with different people on the team.
Three were technical; the last one was a presentation I gave to a panel and then received questions.
I had built a balancing table with a resistive touch pad on top of it. You could place a ball on it and it would balance the ball in the center. They asked how the system would respond if you hung a heavy weight from one side of the table.
The following metrics were computed from 158 interview experiences for the SpaceX Mechanical Engineer role.
SpaceX's interview process for their Mechanical Engineer roles is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for SpaceX's Mechanical Engineer interview process.