BMW says the XM is the first dedicated model since the M1, but the two models represent totally different philosophies. One is an extremely large and heavy SUV while the other was a low-slung, lightweight mid-engined supercar. Despite its heft, the new luxobarge is properly quick in a straight line, helped by a seriously powerful electrified V8. A new acceleration test followed by a top-speed run shows the XM at full tilt on the Autobahn.
How did it fare? The XM took 4.18 seconds from 0 to 62 mph (100 km/h), thus proving once again BMW underrates the performance delivered by its M cars. It was nearly two-tenths of a second quicker than advertised, and a mighty impressive acceleration we might add given the curb weight of 2,710 kilograms (5,974 pounds). To put that number into perspective, a Lamborghini Urus Performante is a whopping 560 kg (1,234 lbs) lighter.
