The 2006 Mazdaspeed Atenza (known as Mazdaspeed6 in North America and Mazda 6 MPS in Europe, South Africa and Australia) is a high-performance version of the Mazda 6. Its mission statement was written with the help of Peter Birtwhistle, chief of Mazda's advanced design studio in Germany at the time. It was initially unveiled as a concept at the 2002 Paris show.
It features a turbocharged version of the 2.3 L MZR I4 which produces 272 PS (200 kW) (European version is detuned to 260 PS (191 kW); the North American version, at 274 hp (204 kW), revised to 270 hp (200 kW) for 2007). All models have 280 lb·ft (380 N·m) of torque. This 2.3 L DISI turbocharged engine features direct fuel injection and conforms to the new Euro 5 emissions standards. It has a revised front fascia with a raised hood, a 6-speed manual transmission, and all-wheel drive. The all-wheel-drive system uses Mazda's Active Torque Split computer-based control, which routes up to 50% of the power to the rear wheels depending on driving conditions. The Mazdaspeed Atenza competed with the Subaru Legacy GT and less directly with the compact Subaru Impreza WRX STi and Mitsubishi Lancer Evolution.
Originally scheduled to be launched in June 2005, the Mazdaspeed Atenza was delayed until November. In North America, the Mazdaspeed6 comes in two trim levels; the "Sport" trim with cloth interior and standard key entry and ignition; and the "Grand Touring" trim with leather interior, keyless entry/ignition, and an optional DVD navigation. Automatic climate control is standard, as is a 200 W Bose stereo system featuring seven speakers and a 9-inch subwoofer in addition to an in-dash six-disc CD changer. A sunroof with moonroof feature is optional on the Grand Touring trim.
Car and Driver magazine has achieved a 0-60 mph time of 5.4 seconds for this vehicle
Source: Wikipedia, 2012