Turbocharging

Don Sherman:

The turbocharger recently turned 100 and the supercharger is even older. And despite their long histories, neither seems a clear winner.

Which is best suited to a vehicle depends on the intended use. With both alternatives at their disposal, engineers consider cost, driving characteristics and the space available under the hood to determine which system belongs where. Even on the same basic engine, the choice may change depending on the vehicle in which it will be used.