That process is helped by Rivian's new system architecture introduced in the Gen 2 R1 platform last year. This not only greatly simplified the architecture of the vehicles, cutting cost and weight, but it enabled far more finite control over those motors.

The Rivian R1S Tri-Motor was already the quickest SUV we've ever tested, hitting 60 mph in just 2.86 seconds. We didn't think anyone could possibly need a more powerful version, but the folks at Rivian disagree. After a lengthy wait, the 2026 Rivian R1S ...

Rivian already made the most compelling electric trucks in the world. But the new Quad-Motor versions raise the bar.