Cadillac CT6 Will Come With Choice of Two New V-6 Engines

DETROIT (Detroit Free Press/TNS) -

Cadillac will offer two new V-6 engines in the CT6 large sedan that will be unveiled later this month at the New York International Auto Show.

One is a 3.6-liter V-6 and the other is a 3.0-liter twin turbo V-6. Both will feature two technologies – active fuel management and automatic stop-start – that will result in significantly better fuel economy than the V-6 engines they replace.

Active fuel management deactivates two of the six cylinders when the driving situation doesn’t demand a surge of power. Start-stop saves gasoline by shutting off the engine when the car stops in traffic.

Both engines are manufactured at GM’s Romulus, Mich., powertrain factory, where the automaker has invested $540 million for the equipment needed for the more sophisticated content of these engines.

They will be mated with new eight-speed transmissions, the 8L90 and the 8L45 that are also used in the ATS, CTS, ATS-V and CTS-V. Those transmissions are made in Toledo, Ohio, and Silao, Mexico.

The CT6 is the first completely new model Cadillac has introduced since hiring Johan de Nysschen as its president last year. De Nysschen, who held similar positions at Infiniti and Audi, has been supported by a $12 billion product-development plan through 2020. The plan calls for eight new products, five of which will be in market segments in which Cadillac doesn’t yet complete.

Cadillac will show the CT6 on March 31 in New York, on the evening before the New York Auto Show opens.

Workers at GM’s Detroit-Hamtramck assembly plant will begin building the car in the second half of this year, and dealers are expecting to receive the first ones between October and December.

Cadillac engineers said Friday the 3.0-liter twin turbo will reach 400 horsepower, or considerably more power than the BMW 740i’ 3.0-liter twin turbo (315 horsepower) and the Audi A7’s 3.0-liter supercharged V-6 (310 horsepower).

The 3.6-liter engine can reach 335 horsepower 284 pound-feet of torque.