At the time of purchase, one year of OnStar Directions and Connections includes all of OnStar’s advisor-based safety and security features, including Automatic Crash Response and Stolen Vehicle Assistance, as well as Turn-by-Turn navigation.
Five years of OnStar Basic Plan includes RemoteLink Key Fob Services, allowing owners to remotely start and lock/unlock a car (if properly equipped), and activate the horn and lights from anywhere with a data connection. It also includes OnStar Vehicle Diagnostics, which runs monthly checks of a vehicle’s engine, transmission, anti-lock brakes and more, and Dealer Maintenance Notification, which sends a diagnostic report directly to a preferred dealer, simplifying service scheduling.
The engine lineup starts with a standard 2.0L turbocharged four-cylinder and an available 3.6L V-6. The Vsport is powered by the exclusive Cadillac Twin-Turbo engine and eight-speed automatic transmission powertrain combination. The eight-speed automatic is also paired with 3.6L/RWD models.
The CTS’s award-winning 2.0L Turbo is rated at 272 horsepower (203 kW) and 295 lb-ft of torque (400 Nm), while the 3.6L V-6 is rated at 321 horsepower (239 kW) and 275 lb-ft of torque (373 Nm). Each features direct injection and dual overhead camshafts with continuously variable valve timing, which help optimize power and efficiency, as well as reduce emissions.
At 136hp/L, the 2.0L Turbo is one of the most power-dense engines in the industry, delivering 90 percent of its peak torque from 2100 rpm to 5400 rpm and the full 295 lb-ft of peak torque (400 Nm) from 3000 to 4600 rpm. The broad torque band is supported by boost levels as high as 18 psi (1.26 bar) in the speed range, which is designed to give the lightweight CTS an exhilarating feeling of immediate power on demand.
The CTS Vsport’s Twin-Turbo V-6 is the most power-dense six-cylinder engine in the midsize luxury segment – a 3.6L with 118 horsepower per liter (88 kW/liter) – and the eight-speed automatic enhances fuel economy and acceleration over a six-speed automatic.
Rated at an SAE-certified 420 horsepower (313 kW) and 430 lb-ft of torque (583 Nm), it is also the most powerful V-6 ever from General Motors. A pair of smaller turbochargers and an efficient charge air cooler help provide immediate power delivery. Additionally, approximately 90 percent of the Twin-Turbo’s peak torque is available from 2,500 rpm to 5,500 rpm, giving the engine a broad torque curve that customers will feel as strong, willing power in almost all driving conditions, such as accelerating or overtaking traffic on the highway.
The engine is a comprehensive upgrade on the 60-degree, 3.6L DOHC V-6 offered in the SRX, XTS and ATS. However, almost every component is unique, including:
- All-new cylinder block casting
- All-new cylinder head castings
- Strengthened connecting rods
- Machined, domed aluminum pistons with top steel ring carrier for greater strength
- 10.2:1 compression ratio
- Patented, integrated charge air cooler system with low-volume air ducts
- Two turbochargers produce more than 12 pounds of boost (80 kPa)
- Vacuum-actuated wastegates with electronic control valves
- All-new direct injection fuel system
- Tuned air inlet and outlet resonators, aluminum cam covers and other features that contribute to exceptional quietness and smoothness.