The Chinese clone systems SD connect C4 work OK, but for the W205 you’re mostly dealing with diagnostic support. There are still things you can do such as teach-in processes etc, but for the W205, MB largely disabled support for offline coding using Xentry (well, not entirely, but effectively) , so to do any module software updates requires Online SCN, which needs a dealer...

As the name suggest, Benz Ecom is for newest Benz diagnosis and programming. SD C4 is for older Benz diagnosis and programming. Highlights: Benz Ecom package comes with one dongle, one hard disk with software, activation via the Teamviewer. with DoIP function, the speed is faster and more stable   Benz Ecom VS SD Connect C4 Ecom Supports diagnostic software Xentry, ...