Are you looking to buy a car but can't decide between a BMW X4 or Mercedes-Benz S-Class? Use our side by side comparison to help you make a decision. We compare design, practicality, price, features, ...

also result in the X4 being a bit more pinched at the rear, which is not especially great for visibility, with the vehicle’s blind spots taking some getting used to. Inside the GLC63 is clearly a ...