BMW’s new of a new M550d xDrive high-performance diesel model aren’t much fair . The newest in the M Performance lineup packs a quad-turbo 3.0-liter diesel I-6 that BMW says is the most powerful diesel six-cylinder in the car’s world at 400 hp and 560 lb-ft of torque. Even more attractive is the M550d also comes as a wagon, but not for the U.S.

The M550d xDrive rides on pack of 19-inch wheels shrouded in 245/40 front and 275/35 rear tires

In Europe, the BMW M550d xDrive is available as a sedan or wagon and it has M sports suspension. Also Integral Active Steering, M aerodynamics package, dark chrome M Performance exhaust tips and M sports brakes with blue metallic calipers as usual. The mirrors o sides, grille frames with dual kidney, front valance trim, and fender vents are made  in Cerium Grey. The M550d xDrive rides on pack of 19-inch wheels shrouded in 245/40 front and 275/35 rear tires

It’s 3.0-liter turbodiesel inline-six has four multi-stage turbochargers to make its 400 hp and 560 lb-ft. It goes up 135 hp and 103 lb-ft from the diesel powerplant in the Euro-spec 530d and 19 hp and 14 lb-ft from the triple-turbo M550d before. The quad-turbo engine is coupled to an eight-speed automatic transmission and BMW’s xDrive all-wheel drive system. If the engine sounds familiar it’s because it’s the same one found in the 750d, which means it should be able to move a smaller 5 Series with ease.

As enticing as a quad-turbo diesel 5 Series sounds, a BMW rep said that the M550d xDrive isn’t coming to the U.S. Again, what a shame.