CLE 646 OR M4 CS❓🔥 Mercedes-AMG just threw the CLE 646 Spezialanfertigung into the fight with a 646-hp 4.0L twin-turbo V8 and rear-wheel drive, lining it up perfectly against BMW’s 550-hp M4 CS and M xDrive. The AMG sends 850 Nm (627 lb-ft) through a nine-speed AMG SPEEDSHIFT TCT 9G, while the BMW uses an eight-speed M Steptronic and 650 Nm (479 lb-ft) from its 3.0L twin-turbo straight-six. On paper, BMW wins the launch, hitting 62 mph in 3.4 seconds versus 3.9 seconds for the rear-drive Mercedes. The AMG answers with a 193-mph top speed, slightly above the M4 CS at 188 mph. Mercedes also stripped roughly 170 kg from the CLE donor, fitted dedicated coil-over suspension, widened the body, added serious aero and completely ditched AWD for RWD. Its tire setup is equally wild, running 305/30 ZR20 up front and 335/30 ZR20 out back, compared with the M4 CS on 275/35 ZR19 fronts and 285/30 ZR20 rears. BMW’s advantage is that we already know what it can do around the Nordschleife, where ...