For the first time since this generation of Mazda6 was introduced, Mazda is offering the 6 with a more powerful optional engine. It's a 2.5-liter turbocharged four-cylinder available on the three highest trims: Grand Touring, Grand Touring Reserve and Signature. This new engine offering means Mazda can more directly compete with the rest of the midsize family sedan market, the vast majority of which have at least two engine options, if not more. So we decided it was a good time to see just how well the turbo Mazda6 is matching up with the established set.