The S80 T6 trim upgrades to a more powerful engine: a turbocharged 2.9 liter line six, which generates 268 horsepower and 280 pound-feet of torque.  The T6 is only available with a four-speed automatic transmission, but a manual shift feature is included.  The T6 adds several amenities beyond those found in the 2.5T, including leather upholstery, a power passenger seat, a power sunroof, an auto-dimming rearview mirror and the On-Call Plus assistance system.  This style is also differentiated by fog lamps, 17-inch wheels and an anti-skid system.