Since everyone’s expectation from a luxury SUV are not the same, one can select a trim depending on what is expected from the car such as powerful diesel engine with high horsepower, traction, torque, fuel economy, or a eco based fueling system., various trims can be selected according to one’s needs. It is to be noted that the 40e is also by far the least expensive petrol car in the X5 range, undercutting the xDrive50i. But for the ‘best in all’ kind of experience, we recommend BMW X5 xDrive 50i & X5 M Sport Design.