After launching the latest version of the BMW M550i xDrive, the German carmaker is now introducing its diesel counterpart -- the new M550d xDrive (G30/G31). Available either as a sedan or as touring model, the new M550d xDrive offers less output than the M550i xDrive, but has significantly more torque than the gasoline model.
Operating behind the scenes is a 3.0-liter six-cylinder diesel engine that could be considered as the world’s most powerful of its kind in the automotive area. This six-cylinder diesel mill employs multi-stage turbocharging with four turbochargers, allowing it to provide up to 400 hp (294 kW) of output at 4,400 rpm and up to 560 lb.-ft. (760 Nm) of torque available from 2,000 rpm.
Interestingly around 332 lb.-ft. (450 Nm) of torque is readily available from just 1,000 rpm. In comparison, the M550i xDrive is powered an M Performance Turbo 8-cylinder TwinPower 4.4-liter engine with a pair of twin-scroll turbochargers and a High Precision Injection system. This gasoline engine could deliver 456 hp of max output at 5,550 rpm and 480 lb.-ft. of torque available at 1,800 rpm. When compared to the previous M550d xDrive, the latest iteration is more powerful by 19 hp (14 kW) and 15 lb.-ft. (20 Nm).
The new BMW M550d xDrive’s 3.0-liter six-cylinder diesel engine has this huge amount of power is transmitted to the all four wheels (BMW xDrive system) through an eight-speed automatic sports gearbox. BMW’s intelligent xDrive all-wheel-drive system could split drive power between all four wheels as the situation calls for it. Since this system has a rear-wheel bias, it could deliver distinctive M Performance driving dynamics and supreme driving performance.
With this high level of power in disposal, the sedan version of the new M550d xDrive could accelerate from zero to 62 mph (100 km/h) in just 4.4 seconds while the touring version could complete the sprint in 4.6 seconds. Top speed of both sedan and wagon versions of the new BMW new M550d xDrive is electronically limited to 155 mph (250 km/h).
In terms of efficiency, the new M550d xDrive is nonetheless great in this regard. Its sedan version consumes 5.9 liters of diesel per 100 km and emits 154 grams of carbon dioxide per km (both combined). The touring version, meanwhile, consumes 6.2 liters of diesel per 100 km and emits 163 grams of carbon dioxide per km (both combined).
Complementing the powerful diesel engine are standard components and features like M sports suspension, Integral Active Steering and M aerodynamics package as well as exhaust system with M Performance specific twin tailpipe trims in dark chrome.
Also coming as standard are M sports brake featuring brake calipers -- finished in blue metallic -- with M inscription. Its radiator grille frame, bumper design elements, exterior mirror housings and side air breathers are finished in Cerium Grey. The new M550d xDrive rides on 19-inch light alloy wheels Double Spoke 664 M in Cerium Grey as wrapped in mixed tires.