This shouldn't come as a surprise to anyone, and probably not worthy of promotion on Hacker News. Consider the counterfactual: if Merc hadn't used these open source libraries, they would have had to roll their own implementations of PNG, ZIP, an XML parser... now that would be a story!

Similar hilariously long lists can be found on many web-connected devices, from BMWs to iPhones.

(Pages 3 to 6 are the interesting ones though -- it shows that a majority of these libraries/codebases apply to the brand new S-Class. And the most noteworthy inclusion is AOSP, i.e. Android.)