Which technician correctly states that unibody vehicles are generally lighter and more fuel efficient than body-over-frame vehicles?

Unibody vehicles, which integrate the body and frame into a single structure, are known for their lighter weight compared to body-over-frame vehicles, where the body is mounted on a separate frame. The design of unibody vehicles allows for a more efficient use of materials, which reduces the overall weight of the vehicle. This lighter construction contributes to better fuel efficiency, as less energy is required to move a lighter vehicle.

When examining the distinctions between unibody and body-over-frame vehicles, unibody designs benefit from improved aerodynamics and structural integrity, leading to enhanced handling and performance. Furthermore, the manufacturing processes used in unibody construction often allow for more efficient use of space, resulting in better fuel economy.

In summary, the accurate statement regarding unibody vehicles being lighter and more fuel efficient than body-over-frame vehicles firmly backs the assertion made by Technician A. Their premise aligns with established knowledge about vehicle design and performance.