The B5 AWD is the standard powertrain in the 2023 Volvo XC90 Core trim level and produces 250 horsepower and 258 pound-feet of torque. The B6 AWD is optional on the Volvo XC90 Core and standard on all other Volvo XC90 trims. With its 295 horsepower and 310 pound-feet of torque, the B6 AWD is the more potent powertrain option.