Photo of Cadillac CT6 courtesy of General Motors.

Photo of Cadillac CT6 courtesy of General Motors.

Cadillac will offer a plug-in hybrid electric (PHEV) version of its 2016 CT6 full-size luxury sedan, the automaker announced at the Shanghai auto show.

The CT6 PHEV contains an 18.4 kWh lithium-ion battery pack, and its battery system can be charged using a 120- or 240-volt charger, according to Cadillac. The vehicle’s battery system will use General Motors' active thermal control system that is designed to maintain electric range over the battery system’s life.

In addition, the CT6 PHEV includes a two-motor electric variable transmission (EVT) and a turbocharged 2.0L four-cylinder engine with spark-ignited direct injection and variable valve technology. The combined system is capable of producing total system power of 335 hp and 432 lb.-ft. of torque, according to Cadillac.

Official details of the CT6 PHEV's driving range and fuel economy will be provided closer to the vehicle's U.S. launch, although Cadillac said it expects the fuel economy of the CT6 PHEV to be more than double that of the car's conventional engine offerings, as measured by miles per gallon equivalent.