V-engines are preferred over in-line engines due to their compact design, which allows for better space utilization in engine compartments. They generally provide a more balanced weight distribution, enhancing vehicle handling, particularly in high-performance cars. V-engines also offer a superior power-to-weight ratio, leading to improved acceleration and overall performance. Additionally, their shorter crankshafts result in reduced vibrations and noise compared to in-line engines. Ultimately, the choice between the two types of engines depends on the specific requirements of the vehicle.