What’s better, B5 or B6?
With the Volvo B6 engines, you’ll find that it adds a supercharger, which offers 295 horsepower to deliver stronger low-end response and acceleration. Options with the Volvo B5 engine provide premium driving that’s refined and responsive, but also in a relaxed way, as the performance is linear and smooth. Volvo XC90 Engine Specs This B5 configuration outputs 247 horsepower and 258 pound-feet of torque. Volvo XC90 vehicles with this powertrain can tow up to 5,000 pounds.volvo b5 vs. Within the volvo t series engines, the t5 engine provided 250 horsepower and 258 pound-feet of torque. With the b5 engine, you’ll get 247 horsepower and 258 pound-feet of torque.