Standard equipment on the 2020 Audi S6 includes a pair of electric turbochargers that virtually eliminate dreaded turbo lag, the time it takes a conventional turbocharger to make noticeable boost pressure (power) after the throttle is depressed. Audi announced in July that each new S6 will feature two electric turbos that make boost in 250 milliseconds, or one-quarter of second. The sport sedan’s performance is expected to at least match that of the 2019 V-8-powered S6 it replaces, but will do so with two fewer cylinders and more than a liter less engine displacement. With no small help from the twin turbos, the 2.9-liter V-6 mild-hybrid drivetrain system makes 444 horsepower and 443 pound-feet of torque, and sprints to 100 km/h (62 mph) in 4.4 seconds.

The 2020 Audi S6 has electric turbochargers that are claimed to provide greater throttle response. Most turbos are powered by exhaust pressure, which creates a lag between the time the throttle is depressed and when the turbos create boost than can be felt. PHOTO: AUDI

Electric turbos spin up boost in one-quarter second: