The History of the Toyota i-FORCE™ Engine: From V8 to Hybrid Power

Toyota Chula Vista has watched the Toyota i-FORCE™ name grow from a single V8 into one of the most versatile powertrain families in the Toyota lineup. Today, that history culminates in models like the Toyota Tundra i-FORCE MAX™, a hybrid system built for serious towing and hauling. Here is a look back at how i-FORCE has evolved over the years.

From V8 Muscle to Modern Turbo Power

Toyota introduced the i-FORCE name in 2000 on the original Toyota Tundra, badging a 4.7-liter V8 built for the brand’s first true full-size pickup. When the second-generation Toyota Tundra arrived for 2007, the i-FORCE V8 grew to 5.7 liters, producing 381 horsepower and 401 lb-ft of torque for over a decade.

Everything changed with the third-generation Toyota Tundra in 2022. Toyota retired the V8 entirely in favor of a twin-turbocharged 3.4-liter V6, badged i-FORCE, that produced 389 horsepower and 479 lb-ft of torque, more than the outgoing engine while improving efficiency.

The Debut of i-FORCE MAX Hybrid Power

That same 2022 Toyota Tundra introduced i-FORCE MAX, Toyota’s first-ever application of the name to a Toyota hybrid powertrain. The system pairs the twin-turbo V6 with an electric motor-generator mounted between the engine and a 10-speed automatic transmission, forming a parallel hybrid setup rather than a traditional series hybrid design. Combined output reached 437 horsepower and 583 lb-ft of torque, making it the most powerful engine ever offered in a Toyota Tundra.

i-FORCE MAX Expands Across the Lineup

Toyota quickly extended i-FORCE MAX beyond the Toyota Tundra. The Toyota Sequoia adopted the system for 2023, followed by the Toyota Tacoma and the returning Toyota Land Cruiser in 2024, both using a turbocharged 2.4-liter four-cylinder paired with a 48-horsepower electric motor. The Toyota 4Runner later joined the lineup with its own i-FORCE MAX option.

The newest Toyota Tundra carries the original V6 i-FORCE MAX forward, delivering 437 horsepower and 583 lb-ft of torque.

Experience i-FORCE MAX™ Power at Toyota Chula Vista

Nearly three decades of i-FORCE engineering lead directly to the capability under the hood of today’s Toyota Tundra. Drivers who want to feel that history firsthand should schedule a test drive to experience the 2026 Toyota Tundra i-FORCE MAX for themselves. Toyota Chula Vista is ready to help you find the configuration that fits your work and your life.