There is no straightforward answer to whether a turbocharger or a supercharger is better for a car, as both have their own advantages and disadvantages. If you're looking to balance performance with fuel economy and efficiency, turbocharging may be the better choice for you. Turbochargers are generally more efficient than superchargers and can provide a greater boost in power at higher RPMs. On the other hand, if you're more interested in a straightforward solution for raw horsepower, then supercharging could be the way to go. Superchargers provide instant boost at low RPMs and can be more reliable than turbochargers. Ultimately, your choice between the two will depend on your specific driving needs and preferences.