SciFrog:

The ETron 249 WLTP range translated to 204 EPA range... Still not clear why the gap exists.

Discussed this before on another thread; however, one believes that the Volkswagen Group is being conservative in its calculations on range and performance for its EV offerings to avoid potential negative news stories.  Additionally, companies like Volkswagen Group have very stringent quality measures that must be met before a product is signed off, not sure the same can be said about Tesla as the company, namely Musk, tends to "wing it."