Both are high on horsepower, and the CAR Buyers Guide YouTube channel drag raced them to see which was quicker.
The Audi is at a disadvantage right off the bat. It’s not only about 200 kilograms (440 pounds) heavier than the Mercedes, but it’s also down on power. Its twin-turbocharged 4.0-litre V8 produces 591 bhp (441 kilowatts) and 800 Newton-metres (590 pound-feet) of torque. The Mercedes makes 603 bhp (450 kW) and 850 Nm (626 lb-ft) from its 4.0-litre twin-turbo V8. Both send the power to all four wheels; however, the Mercedes’ extra power isn’t immediately noticeable in the race.
See the full article here - https://uk.motor1.com/news/514060/amg-e63-drag-race-rs6/
