The world’s most powerful 6-cylinder diesel series
It is simply the most powerful 6-cylinder diesel engine in the world and is available in the BMW 5 Series range. The M550d xDrive will be available for the saloon and van. This “M5 Diesel” uses the same engine as the 750s xDrive, i.e. a 3.0-liter six-cylinder with four turbos (instead of three, as it happened in the previous M550d), debating something like 400 hp (19 hp more than before) at 4400 rpm and 760 Nm (plus 20 Nm) at 1000 rpm.
Dubbed internally as “V8 Fighter”, this engine uses two sets of turbos, with two low pressure and two high pressure, the two low pressure and one high pressure are constantly running. The ultimate turbo – high pressure – only comes into play when required for rough accelerations or idling, around 2500 rpm. It is associated with the xDrive integral traction system and an eight-speed automatic transmission as standard, allowing acceleration from 0 to 62 mph in just 4.4 seconds (4.6 seconds for the van) and 155 mph of maximum speed, limited electronically.
BMW anticipates an average consumption between 5.9 l/62mi and 6.2 l/62mi for the van.
As standard, the M550d xDrive features M suspensions (with a 10-mm lowering), active M-integral steering, an aerodynamic package, an M exhaust system and M brakes. The wheels have 19 inches.
Being an M Performance version (below M Motorsport as the future M5), BMW has changed the mirror covers, the grille frame, the front bumper and the grey side air vents. Prices and features for Portugal will be revealed closer to the launch, due to take place in the second half of the year.