Very different systems. First of all, the Tesla Autopilot is not full self driving. The Autopilot is an assistant system combining distance aware cruise contro

Very different systems. First of all, the Tesla Autopilot is not full self driving. The Autopilot is an assistant system combining distance aware cruise control with lane keeping (autosteer) and lane changing. It always requires full driver attention. The Mercedes system has gotten legally recognized as a level 3 system, which allows the driver to stop paying attention when the system is active and for that Mercedes takes legal responsibility. There is even an european law allowing for that. However, the Mercedes system has one big catch: it can be only activated on selected, mapped roads (interstate equivalents with lane dividers) and only up to 40mph speed. Tesla FSD (full self driving) is a completely new system for autonomous driving. It is currently in a beta testing phase. Currently it also requires full driver attention and is available only to a subset of the customers as part of the testing. It is however designed to handle any traffic situation on any road.