Whether you like petrol or diesel engines, BMW has good news to announce about the X7 Facelift. On the gasoline side, there are new inline-six and V8 powertrains, complete with light-hybrid technology. Where oil-burners do not frown, the 3.0-liter gets a 48V setup of gas engines for better efficiency. Other common features the X7 xDrive40d shares with others include the xDrive and the eight-speed automatic transmission.
In Europe, where the X7 xDrive40d will be widely sold, the diesel engine is expected to produce 4,400 rpm to 340 hp (250 kW) and 1,750 rpm to 700 Nm (516 lb-ft). If these output numbers seem familiar, then they match the pre-facelift model perfectly. However, LCI adds an electric motor that is good for 12 hp (9 kW) and 200 Nm (148 lb-ft). It brings a total of 352 hp (259 kW) and up to 720 Nm (531 lb-ft).
Despite the temporary electric boost, BMW noted that the X7 xDrive40d would still take 6.1 seconds to reach 62 mph (100 km / h). Flat out, its maximum speed is 151 mph (243 km / h) or 2 km / h less than before. Inline-six diesel now has steel – instead of aluminum – pistons for an improved combustion process. Also, the common-rail direct injection has a solenoid valve injector and an upgraded oil separator.
The X7 xDrive40d is now cleaner and produces a bit more power
All these changes have been made to make the engine less harmful to the environment under constant pressure from the regulators. With the restructured six-cylinder diesel, the X7 xDrive40d WLTP will deliver as little as 7.6 liters / 100km in the combined cycle. This is equivalent to 200 grams of CO2 emissions for a Euro 6d-compliant engine.
Don’t hold your breath for the return of the X7 M50d since the quad-turbo monster returned with the final version a few years ago. The B57S was the only diesel engine in the world with four turbochargers, but it was considered too expensive to update according to strict emission regulations.
Source: BMW