Mercedes has just confirmed full pricing and specs for the new V6 powered X 350d. It's available to order now and will be priced at £46,020, which makes it £7,840 more expensive than the 250d. The new 3.0l engine produces 254bhp and 550Nm of torque. The new powertrain makes it capable of doing the 0-60 sprint in only 7.9 seconds.