At launch, the i7 will be available in 50 xDrive and 60 xDrive strengths, with dual-motor powertrains tuned for 449 hp (335 kW) and 487 lb-ft (660 Nm) and 536 hp (400 kW) and 549 lb-ft (745 Nm), respectively. BMW reckons the i7 60 xDrive will do zero to 60 mph (97 km/h) in 4.6 seconds, while the 50 xDrive will do the same in 5.3 seconds. BMW continues to offer adaptive regenerative braking that varies the level of regen based on navigation data and the speed of cars ahead, as well as a coasting feature for increased efficiency at highway speeds. Drivers can also manually select low, medium, and high settings. Combustion engines continue The 740 makes about 400 hp. Credit: Stephen Edelstein The 740 makes about 400 hp. Credit: Stephen Edelstein A V8 option will return in an M-badged variant at a future date, but for now, the rear-wheel-drive 740 and all-wheel-drive 740 xDrive have a turbocharged 3.0-liter inline-six producing 394 hp (294 kW) and 398 lb-ft (540 Nm) of torque.…