The honor of introducing a new series of BMW engines goes to the 2023 BMW X7 Facelift today. The refreshed seven-seater luxury SUV has just been unveiled and with it, shared the technical details behind BMW and next generation engines. First, we have a BMW B58 3.0 liter six-cylinder engine with TU2 update. The B58 engines increase the power to 40 horsepower for a total output of 375 pts (380 hp in Europe). Peak torque also increased from 52 pound-feet to 383 pound-feet (520 Nm). Since the B58 is connected to a 48-volt light-hybrid system, the total torque can be increased to 398 lb-ft (540 Nm).
The light-hybrid setup also helps with fuel efficiency, thanks to the Miller cycle that shortens the opening time of the intake valve. Therefore, it leads to increased efficiency of turbo systems and intercoolers. Vanos variable camshaft timing now works electrically which helps reduce emissions. Thanks to the power bump, powered by the BMW X7 xDrive40i – B58 – speeds 0 to 60 mph in 5.6 seconds or 62 mph (100 km / h) in 5.8 seconds. Maximum speed is limited to 155 mph (250 km / h).
Brand new 4.4 liter V8 TwinTurbo
BMW X7 M50i has given the model a new name: BMW X7 M60i 7 And to accurately distinguish between these models, the BMW X7 M60i comes with a brand new engine: a 4.4 liter V8 TwinTurbo. It is a BMW S68 unit made by the M division that will also end up in future M models. The new powerplant benefits from a cross-bank exhaust manifold, bank-symmetrical turbocharger and an external engine oil cooling. There is also a new oil pump and powerful crankshaft drive.
Of course, the new S68 comes with more power. The V8 now produces a maximum torque of 523 horsepower (530 hp in Europe) and 553 lb-ft of torque (750 Nm). The engine accelerates the BMW X7 M60i from 0 to 60 mph in just 4.5 seconds or from 0 to 62 mph in 4.7 seconds. We recently tested the S68 engine on the upcoming 2023 BMW 760i xDrive and we were impressed with its power, smoothness and sound. You can read that review here.
This new V8 will also be used in future M60i models, such as the Facelifted X5 M60i. Naturally, purists may be annoyed by BMW’s choice to use an M-specific engine in M-Lite cars. However, it was probably a simple business decision: the new engines are Euro 7 loyal. And with the uncertain future of combustion engines, having two separate V8 powerplants doesn’t make much sense.