CTS standard features include leather seating surfaces, dual-zone automatic climate control, OnStar with turn-by-turn navigation, a Bose eight-speaker sound system with CD, MP3 and auxiliary capability, remote keyless entry and programmable central locking, power windows with express-up-down on the front and express-down on the rear, power driver's seat and XM Satellite Radio.  

The optional Luxury Package ($3,400) for the CTS with 3.0-liter V6 adds a six-disc CD changer, Bluetooth, a cargo convenience net, accent lighting, memory, heated and 10-way power driver and front passenger seats with power lumbar, theft deterrent alarm, universal garage door opener, wood trim, and leather-wrapped steering wheel.   The Performance Package ($5,000) adds foglamps, HID headlamps, limited-slip differential, V-rated tires, performance brakes, sport suspension and some additional features.   The optional AM/FM/CD/MP3/DVD audio system ($3,145 with 3.0-liter V6, $2,145 with 3.6) has Bose 5.1 Cabin Surround Sound, 10 speakers, a hard-drive, HDD-based navigation, XM NavTraffic/Real Time Weather and USB connectivity.  

The Premium Package for the CTS with 3.6-liter V6 ($6,095) includes cabin filtration, the high-end sound system with navigation, keyless entry, remote start, rear park assist, heated and ventilated seats, power tilt and telescope steering column with memory, moonroof, and numerous luxury and convenience features that are parts of other packages.   The Performance Package ($1,840 with manual transmission, $2,090 with automatic) includes 19-inch polished wheels, performance tires, steering wheel-mounted paddle shifters (with automatic transmission), fog lamps, performance suspension, limited-slip differential, and performance brakes.   In addition, there are several stand-alone options, including the moonroof, polished alloy wheels and various paint choices.  

The CTS-V ($60,720) features a supercharged V8, a limited-slip differential, Brembo disc brakes with six-piston front and four-piston rear calipers, P255/40ZR19 tires in front and P285/35ZR19 tires in the rear, and 10-spoke alloy wheels measuring 9.0 inches wide in front and 9.5 inches wide in the rear.   The CTS-V also has distinctive exterior details, including a mesh grille and appropriate badging, to make it stand apart from the normal CTS.   The CTS looks clean, elegant and modern, but the CTS-V, with its few changes, takes on a more assertive appearance.   Optional for the CTS-V are Recaro front seats ($3,400) and a suede steering wheel ($300).  

Safety features that come standard on all models include front, side and side-curtain airbags, ABS and Stabilitrak electronic stability control and traction control.   Optional all-wheel drive improves safety further.