[custom_adv] Buick LaCrosse The Buick LaCrosse is a large/mid-size (full-size / executive since 2010) sedan manufactured and marketed by Buick since 2004. The LaCrosse is now in its third generation, slotted above the Buick Regal as the brand's flagship sedan. [custom_adv] Cadillac CT6 January - September sales: 7,270, down 10.6% The only surprise of the bunch, the CT6 is an unusual choice for GM, because it serves as the tech halo for Cadillac. It's still the only car that has GM's Super Cruise semi-autonomous driving technology. [custom_adv] Cadillac XTS January - September sales: 12,664, up 15.9% Most XTS cars are sold to limousine and taxi companies. GM recently updated the XTS' design to keep customers happy, helping drive sales higher. [custom_adv] Chevrolet Cruze January - September sales: 109,662, down 26.5% The bestselling Chevy sedan, the Cruze is highly regarded among auto reviewers and enthusiasts. The Cruze was the "Consumer Reports" top pick for compact cars last year. [custom_adv] Chevrolet Impala January - September sales: 43,952, down 13.4% The recently redesigned Chevy Impala was the 2018 "Consumer Reports" top pick for large cars. But it's a large car in a market that seems to have forgotten that large cars exist. The Impala is among the worst-selling Chevrolets. [custom_adv] Chevrolet Volt January - September sales: 13,243, down 13.7% The Volt is a plug-in electric hybrid sedan lost in the excitement of all-electric cars. Chevy has been promoting the electric Bolt hatchback, though Bolt sales have fallen too.