The current twin-turbocharged 4.4-liter V8 found in the XM and ... At the same time, BMW is maintaining its investment in combustion engine and hybrid technology, acknowledging that the shift ...

UK-based Evolve Automotive has recently strapped a G90 BMW M5 to their dyno ... which should free up a few more ponies from the 4.4-liter eight hiding underhood. But alas, the results will ...