Transmission & Drivetrain

Whether you drive a 500-hp sports car or a 96-hp economy hatchback, all that potency under your car’s or truck’s hood is useless if the engine’s torque doesn’t get to the drivewheels through a complex maze of gears.

In fact, the drivetrain may be the least understood part of a vehicle. New innovations in four-wheel and all-wheel drive have only made that confusion worse for many drivers. Here’s a primer to help explain that mystery under the floorboards: what really happens when you press down on the accelerator.

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