Cadillac unveils next-gen V6 engines; CT6 to get 400hp 3.0L Twin Turbo

Cadillac has announced a new generation of V6 engines that combine the latest technology to balance efficiency, performance and refinement. The engine range is led by an exclusive 3.0-litre Twin Turbo V6 engine that will power Cadillac’s upcoming luxury performance sedan, CT6, whichmakes its world premiere March 31, at the New York International Auto Show. The 3.0-litre V6 gets an estimated peak output of 400 hp 543 Nm of torque. This makes it one of the most power-dense V-6 DOHC engines in the world, developing 133 horsepower per liter.

The 3.0L Twin Turbo is also the only six-cylinder engine to combine turbocharging with cylinder deactivation and stop/start technologies to conserve fuel with the fuel economy expected to be enhanced by up to an estimated 6 percent. Cylinder deactivation temporarily deactivates two of the cylinders in light-load driving conditions to enhance efficiency and seamlessly reactivates them when the driver demands full power. The stop/start system shuts down the engine in certain driving conditions such as stop-and-go city driving to reduce fuel consumption and automatically restarts when the driver takes his or her foot off the brake pedal.

“Cadillac’s elevation on the world stage is driven in great part by its advanced powertrain technology and the all-new 3.0L Twin Turbo powers past the traditional segment leaders with higher degrees of the performance and refinement their reputations were built on,” said Rich Bartlett, assistant chief engineer.

Cadillac has claimed that the CT6’s 3.0L Twin Turbo’s estimated 400 hp and 133 hp per liter is 27 percent greater than the BMW 740Li’s 3.0L turbocharged I-6 (315 hp and 105 hp/L) and 29 percent more than the Audi A7’s 3.0L supercharged V-6 (310 hp and 103 hp/L).  The 3.0L Twin Turbo is also up to 5 dB quieter than the Audi 3.0L TFSI engine.