What happened: Zehnder moved with Sauber's sportscar operation into Formula 1 in 1993. He later became team manager for the Swiss outfit.

Why it matters: His exit ends a link to the Hinwil operation's pre-F1 years. It follows Jonathan Wheatley's March departure as Audi team principal.

What to watch: Audi's 2027 staffing will establish how Zehnder's responsibilities are handled after his departure.