[Video] BMW X7 vs Tesla Model X vs Mercedes GLS

The BMW X7 M50i, Tesla Model X and Mercedes GLS are three upmarket SUVs that offer luxury and performance. But which of these three seven-seaters is most worth putting on your shortlist? The X7 M50i is the most impressive on paper, with its 4.4-liter, eight-cylinder engine and 530hp. But should you get one over the Model X, with its 314-mile driving range and fantastic infotainment? Or how about the GLS, which proves the cheapest but still packs loads of luxury? Let’s find out!