How Toyota engineered its first new sports all-wheel drive system in two decades.

The GR-Four system powering the 2023 Toyota GR Corolla and GR Yaris offers drivers three distinct torque-split modes. This video explores the engineering behind these settings, featuring insights from chief engineer Naoyuki Sakamoto on how the system dynamically manages power distribution.

Toyota developed the GR-Four system as its first dedicated sports all-wheel drive platform in more than 20 years. The system is designed to provide versatility through three selectable torque-split configurations: a 60/40 front-to-rear bias for standard driving, a balanced 50/50 split for track use, and a rear-biased 30/70 setting.

By speaking directly with chief engineer Naoyuki Sakamoto, the video breaks down the mechanical logic that allows the GR Corolla and GR Yaris to shift these power ratios. Understanding these splits reveals how Toyota balances traction and performance in its modern performance lineup.

Source: Toyota GR Corolla's Brilliant AWD System - How It Splits Torque!