The 2021 Mercedes-AMG GLE 63 S is powered by a 4.0-liter V-8 biturbo engine, which produces 603 hp and 627 pound-feet of torque. The GLE 63 S has an integrated EQ boost starter-generator, which combines a starter motor and an alternator in a single, electric motor integrated between the engine and transmission, Mercedes says. It provides an additional 21 hp and 184 pound-feet of torque. It has a nine-speed automatic transmission and all-wheel drive.

The 2021 Mercedes-AMG GLS 63 is powered by a 4.0-liter V-8 biturbo engine with 603 hp. In a first for the performance variant, the GLS 63 has an integrated EQ boost starter-generator, which combines a starter motor and an alternator in a single, electric motor integrated between the engine and transmission, Mercedes says. It provides an additional 21 hp and 184 pound-feet of torque. It has a nine-speed automatic transmission and all-wheel drive.

The BMW X3 xDrive30e plug-in hybrid crossover is the first plug-in hybrid variant of BMW's best-selling model in the U.S. It will arrive stateside in first quarter of 2020. Pricing has not been disclosed. The X3 plug-in hybrid combines a 2.0-liter, inline four-cylinder engine with an electric motor and battery pack to deliver an electric-only range of nearly 20 miles. The all-wheel-drive crossover delivers 292 hp and can go from 0 to 62 mph in 6.1 seconds.

Once a star of America's biggest car shows, Mercedes-Benz is now abandoning them, one by one.