Rivian's software and services unit generated more gross profit than the entire company in Q3 2026, with 59% of that revenue flowing from its joint venture with Volkswagen. The R2 became Rivian's best-selling model during the quarter, and the company raised its full-year delivery guidance. However, Volkswagen is weighing whether to shift most of its volume models to an architecture co-developed with Chinese partner Xpeng, which could threaten Rivian's reliance on the partnership revenue.