Nissan Slashes Rare Earth Use in New Leaf EV Motor

Nissan Motor, in collaboration with its suppliers, has unveiled a game-changing innovation for electric vehicle motors that dramatically cuts reliance on rare earth elements, primarily sourced from China. The new Leaf EV, launched in Japan this January, incorporates motors using 90% fewer heavy rare earths compared to the original 2010 model. This advancement addresses a critical vulnerability in the automotive industry's shift to electrification, where permanent magnet synchronous motors (PMSMs) traditionally demand elements like neodymium, dysprosium, praseodymium, samarium, and terbium for their powerful magnetic fields.

These magnets are embedded in the rotor to generate sustained torque, enabling efficient, high-performance operation essential for EV drivetrains. Without them, motors struggle to deliver the power density needed for competitive range and acceleration. However, China's control over 70-90% of global mining, refining, and magnet production creates chokepoints, as seen in 2025 export restrictions that spiked prices and halted factories worldwide. Nissan's technology circumvents this by optimizing magnet composition and motor design, preserving efficiency without heavy rare earths that enhance heat resistance.

This development arrives amid surging EV sales-over 20 million units projected for 2026-intensifying demand for about 12 kilograms of neodymium-praseodymium magnets per vehicle. While Tesla explores rare-earth-free motors, Nissan's solution is already in production, signaling a broader industry pivot. Automakers like Bosch are also advancing REE-reduced designs with better cooling for 30% efficiency gains. Yet challenges persist: alternative motors like induction types lag in power, and scaling new tech requires investment.

For the automotive sector, this means greater supply chain resilience, lower costs amid volatile REE prices, and accelerated electrification without geopolitical delays. As global players diversify-via U.S. recycling grants or EU partnerships-Nissan's Leaf exemplifies how innovation can secure rare earth-dependent components like motors, sensors, and power electronics, propelling sustainable mobility forward.