WHAT WE'RE DRIVING

It isn't every carmaker that introduces its new model with a session on a tight and slippery test track. But when it's a 1955-kg (4090-lb) sedan with 450 kW (603 hp) and 850 N·m (627 lb·ft) available at the shove of a foot, it is a useful education.

That's what Mercedes-Benz offers its U.K. buyers of the new Mercedes-AMG E 63 S 4Matic⁺.