Detailed specs and features for the 2020 BMW X5 including dimensions, horsepower, engine, capacity, fuel economy, transmission, engine type, cylinders, drivetrain 2020 BMW X5 Specs & Features. More about the 2020 X5. Maximum cargo capacity. 72.3 cu.ft. Length. 194.3 in. Maximum towing capacity. BMW X5 features and specs at Car and Driver. Learn more about Price, Engine Type, MPG, and complete safety and warranty information..