Motor Vehicle Defect cases include claims involving not only passenger automobiles, but also motorcycles, trucks, and vans. Most personal injury cases that arise from motor vehicle defects fall into one of two categories: defects based on faulty vehicle design, or defects arising from an error in manufacturing. Defects can exist in the vehicle?s body and frame, brakes and braking system, cooling and temperature control system, electrical system, engine assembly, passenger compartment, and other parts and accessories.