BMW 6 Series Specs, Engines & Dimensions (from 2020) — Fourth Generation Restyling 1
The restyled fourth-generation BMW 6 Series is a liftback: a tall, long-wheelbase five-door with a wide hatch opening, generous rear-seat room and a comfort-focused character that sets it apart from lower, sportier coupes.
Every BMW 6 Series engine here is a smooth six-cylinder with mild-hybrid assistance, where a small electric unit smooths restarts and eases load at low revs. Choose gasoline for eager response, as in the 640i MHEV, or the 630d MHEV diesel for relaxed long-distance economy. An automatic transmission is standard, with rear-wheel drive or xDrive all-wheel drivetrain.