Why Toyota retired the V8 in favor of twin-turbo V6
The third-generation Tundra dropped the long-running 5.7-liter naturally aspirated V8 in favor of two twin-turbocharged V6 powertrains. The standard i-FORCE 3.4-liter twin-turbo V6 makes 389 horsepower and 479 lb-ft of torque — both numbers comfortably ahead of the outgoing V8 — and the i-FORCE MAX hybrid pairs that same V6 with a motor-generator inside the ten-speed automatic for 437 horsepower and 583 lb-ft combined. The hybrid's torque peak hits at low engine speeds and stays flat across the rev range, which is why the Tundra now feels more decisive when launching a loaded trailer than the V8 truck it replaced.
