The 2022 Tundra's Twin-Turbo V-6 Hybrid Is All About Torque

With the debut of the 2022 Toyota Tundra, the full-size pickup segment has lost another V-8 engine. In place of the Tundra's outgoing unit sits a 3.5-liter twin-turbocharged V-6, complete with a hybrid option. Don't let the battery-assist fool you however, as this new i-FORCE MAX hybrid powertrain wasn't designed for saving fuel, Executive Program Manager Jay Sackett told Road & Track in an interview. No, this new motor is all about making torque.

"I think the priority was definitely performance," Sackett said. "We did see some improvements of efficiency and that was absolutely one of the things on our list. But one of the things we really wanted to focus on was the performance, and it was really centered around torque. We wanted to ensure we provided the torque numbers that full-size pickup truck customers want."

The twin-turbo V-6 in i-FORCE MAX spec is supported by an 1.87 kW electric motor-generator sandwiched between the engine and a 10-speed automatic gearbox. That motor is powered by a 288V battery, which features a nickel-metal hydride construction. The powertrain is good for a combined 437 hp and 583 lb-ft of torque, which represents gains of 48 hp and 104 lb-ft over the Tundra's standard 3.5-liter. That's an impressive torque figure for a V-6, but the motor-generator setup provided other benefits too. The start/stop system has been reworked by Toyota's powertrain engineers, and will now cycle much more frequently than a typical hybrid. Sackett notes that the motor-generator makes this process more seamless than before, and that customers may not notice it happening at all.