The wagon is capable of an astounding 1,069 lb-ft of torque.

Proving once more that restraint isn't part of its lexicon (was there really any doubt after its 690-horsepower G63 AMG 6x6?), German tuner Brabus has unveiled an upgraded Mercedes-Benz E63 AMG Wagon with truly mind-boggling muscle.

Whereas the stock model makes do with 577 horsepower and 590 lb-ft of torque, Brabus' wagon - known officially as the E63 AMG Brabus 850 6.0 - is capable of 850 ponies and a ludicrous 1,069 lb-ft of twist.

In the interests of preventing the necessity of a total powertrain rebuild every two weeks, usable torque is electronically limited to 848 lb-ft. Still, when the ultimate grocery getter is fitted with 4MATIC all-wheel-drive - European buyers can also spec rear-wheel-drive - even that artificially capped output is sufficient for zero-to-60 mph sprint time of 3.1 seconds.

Optional high-performance tires give the wagon a top speed of 217 mph; stick with the standard rubber, and Brabus limits the fun to 187 mph.

Numerous modifications were made to the bi-turbo V8 to enable those figures, with Brabus increasing displacement from 5.5 to 5.9 liters, installing larger turbochargers, and fitting custom pistons, billet connecting rods and an elongated billet crankshaft. A carbon fiber intake module, stainless-steal two-mode sport exhaust and tweaked ECU are also among the special touches.

Outside, the wagon receives a lift-reducing carbon fiber front spoiler lip, a unqiue rear diffuser and a range of 19- and 20-inch wheel designs. Buyers can also choose from a number of different interior treatment to round out the package.

Pricing for the E63 AMG Wagon Brabus 850 6.0 has yet to be announced, but it will likely be commensurate to the extreme performance.