The site claims the next-generation 7 Series will have a range of hybrid versions, including one called the M750Le. It is rumored to use the 3.0-liter turbocharged B58 inline-six engine mated to an electric motor, making it the first M Performance model to have a plug-in hybrid system. Without any hybrid assist, the B58 produces up to 382 horsepower on its own, though the M750Le is rumored to use a new version of the engine (codenamed the B58B30O2) with over 400.
This doesn't even factor in the electric motor, which could bring total output to around 550 hp and 590 lb-ft of torque. BMW already builds a plug-in hybrid variant of the 7 Series called the 745e xDrive iPerformance with a 2.0-liter four-cylinder, though it only produces 389 hp and 442 lb-ft of torque.
https://carbuzz.com/news/bmw-could-b...f-the-7-series