The GT comes with a 361 hp 6.0 L (364 cu in) Generation IV V8,featuring a 6-speed 6L80 automatic and Active Fuel Management, capable of reaching 60 mph (97 km-h) in just 5.3 seconds,[16] with quarter-mile times as low as 13.8 seconds. The G8 GT averages a fuel economy of 15-24 mpg (city-highway).In addition to the larger engine and six-speed transmission, GT models also contain additional equipment, including all of the standard Sedan features plus quad tailpipes, clear taillight lenses, automatic dual-zone air conditioning, a larger center-console display screen, and an 11-speaker Blaupunkt premium audio system with 2 subwoofers, six-disc CD changer, and auxiliary input jack. This has the sports package, adding sport metallic pedals, QS4 19 machine-faced aluminum wheels, summer performance tires and a slightly smaller diameter, leather-wrapped Sport steering wheel.