In a unibody vehicle, what component serves as the detachable mounting that supports the engine and transmission?

• A. Crossmember
• B. Floorpan
• C. Subframe
• D. Engine Mount

Answer: (C)

In unibody designs, the engine and transmission are typically carried by a separate detachable structure called a subframe. This subframe bolts to the body and provides a dedicated cradle for the powertrain, along with mounting points for suspension. That modular assembly can be removed as a unit, which makes engine removal and service easier without ripping apart the main body structure.

The other options aren’t the detachable engine/transmission carrier. The crossmember is a structural beam within the chassis that helps resist bending loads but isn’t the removable cradle for the engine. The floorpan is the metal floor of the passenger compartment and doesn’t support the engine. Engine mounts are the brackets that secure the engine to the subframe or body and dampen vibration, but they’re not the entire detachable mounting assembly.