General Motors product chief Mark Reuss dropped the details at the automaker's Global Business Conference. According to The Detroit News, he revealed that the CT6 would use a twin-turbocharged, 3.0-liter six-cylinder engine with an eight-speed automatic transmission, and a plug-in hybrid would be an additional option. He reportedly claimed it would be the most "powerful six-cylinder gas engine in the segment" and said the hybrid could get around 70 miles per gallon.
Reuss also revealed that the CT6 would be about 53 pounds lighter than the current CTS, despite being about 8 inches longer, according to The Detroit News. If that's the case, the new flagship is about 203.5-inches long, which is 1.5-inches more than the XTS.
To cut so much weight, the sedan is using a combination of aluminum and high-strength steel with stamped and cast parts. In total, the method allows for about 20 percent fewer components. According to The Detroit News, he declared it, "the world's most advanced body structure."
Reuss is making some big promises about the new flagship's tech. There's still quite a long wait to find out if it meets them, because the CT6's production isn't slated to start until late 2015.