To turn engine power into controllable motion, cars rely on something called the differential. A differential allows wheels on the same axle to rotate at different speeds. If you want more information ...

As the How It Works series progresses, we edge closer and closer to a car's ultimate goal—which is, of course, to put power to the pavement. Lost month you learned about how a transmis-sion directs ...

We take our differentials for granted, right? Of course, we expect our vehicles to navigate turns without scrubbing the inside tires or hopping the outside ones. But how does a diff do that? Look for ...