Mercedes is going to introduce their X-Class X350d 4Matic at the upcoming Geneva show and it's going to be the model's most expensive trim. If what Mercedes was offering isn't enough for you, the turbodiesel 3.0-liter V6 engine has power and torque in spades at 258 horsepower and 406 lb-ft of torque. Also comes with 4Matic all-wheel drive.