Brabus is known to be wonderfully over-the-top. Topping its OTT list would be this, the Brabus 850 6.0 Biturbo Wagon, based on the Mercedes-Benz E 63 AMG. The ‘850’ in its name is the power rating. Yes, this five-door family estate has an 850 hp engine – the tuning company’s most decadent motor yet.

That’s just a mere 37 hp short of the Porsche 918 Spyder’s power figure, and unlike the electric motor-assisted hypercar, this one is achieved through pure engine tuning and two (large) turbochargers. Engine capacity has been increased from 5.5 to just over 5.9 litres, complete with tailor-made pistons and crankshaft to match.

Torque is a monstrous 1,450 Nm between 2,500 and 4,500 rpm, though maximum output is limited to ‘just’ 1,150 Nm for reliability’s sake. Despite all its madness, the car is backed by Brabus Tuning Warranty of up to three years or 100,000 km. Not bad for a car capable of getting to 100 km/h in 3.1 seconds, and a restricted top speed of 300 km/h.

Perhaps Amazon should just abandon its Prime Air drone delivery plans and get this load-lugger. It’ll be cheaper, surely (though not by much).