It is not every day that you see a Mercedes-AMG GT 63 S 4-Door Coupé (X 290) drag-race a rather normal BMW F90 M5 with only a few basic aftermarket mods slapped on. Despite the obvious class differences between the two, they are surprisingly evenly matched in terms of straight-line acceleration.
The AMG supercar is related to the E-Class and CLS-Class, utilizing a twin-turbo V8 with a wet-sump lubrication system to the effect of 639 PS (630 hp / 470 kW) and 900 Nm (664 lb-ft) of torque. The example in the video benefits from a Brabus tune that raises its output to 700 PS (690 hp / 515 kW) and 1,000 Nm (738 lb-ft).
Going up against it is a stock M5 with some aftermarket wheels and a performance exhaust system. The power stays at 625 PS (616 hp / 460 kW) and the peak torque at 750 Nm (553 lb-ft). Both are AWD. Where the M5 inches out an advantage is the weight: with the mods on, it tips the scales just under two metric tons (~4,400 pounds), whereas its rival weighs over 2.2 metric tons (~4,850 pounds).
The results are as follows: the winner finishes its quarter-mile run in 10.9 seconds and the loser is 0.06 seconds behind. The sprint from 100 to 200 km/h (62-124 mph) succeeds in 7.21 seconds for the faster car and 7.3 seconds for the slower one. Which one is which? See for yourself, the vid is less than three minutes long!