The forced induction six-cylinder engine, whether it's turbocharged or supercharged, is becoming the performance engine of choice for most cars. V8 blowhards have always told us the "there's no replacement for displacement," but it's never really been true. Mercedes was using Roots superchargers in 1921 for production cars, and most race cars were already using a form of forced induction. Nowadays, America's fastest muscle cars use superchargers.
While factory supercharged and turbocharged V8 engines are becoming more commonplace in the hunt for affordable speed, the turbo six-cylinder engine offers a more compact and lighter package. For cars that need to combine agility with gut-churning straight-line performance, a cranked-up V6 has become the way forward. The straight-six engine, although more awkward to package, is also seeing a resurgence in popularity. These are the best examples of those turbocharged or supercharged six-cylinder engines on the market right now.
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