The Mazda6 morphs from competent family car to fast and frenzied grandtouring machine now that it has been given the full-on turbocharged and all-wheel-drive Mazdaspeed treatment.

The inside of the Mazda 6 isn't quite as extroverted as the outside, but you'll find a few sporty touches: red dash lighting, the three-spoke steering wheel, and brushed-metal-look trim. There's a ...