Automakers are producing their smallest, most fuel-efficient engines ever, while keeping horsepower-happy Americans satisfied. They're doing it with turbochargers, which help four-cylinder engines produce as much power as their traditional V-6 counterparts.
Through the '90s, turbocharged engines represented a small slice of the market, largely relegated to European sports models and performance versions of American cars. Since then, turbocharged engines have expanded to about 21 percent of cars sold in the United States in 2014. Some expect turbochargers to be as popular in America as they are in Europe by 2025, where about 70 percent of all vehicles now sold are turbocharged.
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