Powering the new GLC Coupe is the same turbocharged 2.0-liter four-cylinder used in the standard GLC, incorporating a 48-volt mild-hybrid system to produce 255 horsepower and 295 pound-feet of torque. There are some differences worth noting. At launch, the only GLC Coupe Mercedes offers is the 300 4Matic with a standard-issue AMG Line package. BFFxRg.