Which of the following mechanical components are commonly found on newer unitized constructed vehicles?

Unitized construction in vehicles refers to a method where the body and frame are integrated into a single structure, which provides various benefits, such as improved strength, reduced weight, and enhanced safety. In newer unitized constructed vehicles, it's common to find all of the listed mechanical components because they play critical roles in vehicle functionality and performance.

Suspension systems are essential for vehicle stability, handling, and comfort, allowing the vehicle to absorb road irregularities. Braking systems are crucial for safety, enabling the vehicle to slow down or stop effectively. Powertrains, which include the engine and transmission, are fundamental for providing the necessary power to drive the vehicle.

Since unitized construction vehicles often employ modern designs and technologies to improve efficiency and performance, they integrate advancements in these systems. Therefore, all of these components — suspension systems, braking systems, and powertrains — are indeed commonly found in newer vehicles constructed with this method. This comprehensive integration helps optimize the overall vehicle design and performance.