I don't think you understand diplomacy at all. You negotiate things, and you use leverage. The US has the most powerful economy in the world, so of course that means the US has more leverage than European countries (even if we consider the EU to be a single entity, it's nowhere close to the US in terms of global relevance).
What you're asking for is one-way free trade. German cars should be able to be sold in the US with as few barriers as possible (and should never be threatened) while the US jumps through hoops for local EU products. This is a great position to take in a negotiation since it's all positive for you. It's a terrible position to legitimately hold since no one in a negotiation would ever cede you everything you want. Want to sell cars in the US, the largest market for them in the world? Play ball (at least, as much as you can).
Show me where I asked for one-way free trade deal and where Germany cars should be sold in USA with few berries as possible?
You're putting words into my mouth, which I have never said. Stop making BS up.
If USA wants to add further laws for cars, they can go ahead and do it, its their country, their laws. What the USA is asking the EU, is to scrap some of the environmental laws, designed to protect and benefit ordinary EU citizens. That alone tells you everything you need to know about the shit they are trying to sell.
I guess you would also support the US for forcing us to change laws, where every individual can buy guns in the EU, thus benefit US arms industry right? Where does it end?
And so what if the USA is the biggest economy in the world? Does that mean we have to bend over and accept the terms they are giving us? We also have leverage on them, e.i 500+ million market that USA corporations are having wet dreams about.
The world is bigger than USA and it will only get bigger in the future.