The Audi RS7 Sportback has long been one of the quickest sedans on the market but as this video from Formula E racer Daniel Abt reveals, the new BMW M5 CS is here to redefine what an M5 can do.
As you probably already know, the Audi RS7 Sportback is powered by a 4.0-liter twin-turbocharged V8. This engine churns out 591 hp and 590 lb-ft (800 Nm) of torque, the kind of figures that class-leading supercars had just a decade ago.
By comparison, the BMW M5 CS is fitted with a larger 4.4-liter twin-turbocharged V8 but has 626 hp. Interestingly, it is slightly down on torque compared to the Audi with 553 lb-ft (750 Nm) on tap.
Watch Also: The 627 HP BMW M5 CS Is An Extremely Rapid Autobahn Crusher
With the two lined-up side-by-side, the Audi RS7 Sportback got the slightly better launch as the driver of the BMW was a little slow to react. Despite this, the BMW M5 quickly made up ground on the Audi and stormed past it. The key to the BMW’s stunning comeback was the fact that it needed just 6.66 seconds to accelerate from 100 km/h (62 mph) to 200 km/h (124 mph). By comparison, the Audi RS7 took 8.94 seconds to go from 100-200 km/h.
In the second race, the BMW driver got a much better launch and this time it was the BMW that jumped out to a quick lead. While the Audi put up a valiant effort, it simply isn’t fast enough to keep pace with the M5 CS, partly because it is more than 500 lbs (226 kg) heavier.