I'm all for free trade if tariffs are equalized or better still removed on all sides. As long as America gets punished with higher tariffs on its goods, then Trump or Biden should use tariffs to encourage negotiations to correct the imbalances. Free trade means a fair and level playing field.
Unless you take into account trade balances in ALL sectors, pointing out tariff differences in individual industries doesn't demonstrate anything much.
In the automobile example, FIAT-Chrysler, Ford and GM have plants in Europe. BMW has at least one plant in the US, as do many others. Trying to explain the EU's 10% tariffs on US automobiles, if that's what it is, on the basis that it's unfair to the US is a bit previous. Obviously all those players were involved in the trade negotiations, for all we know there may be perfectly good reasons for the tariffs to be what they are. From my brief stint working in economic forecasting a lifetime ago, one sentence analyses of trade are ok in a bar discussion when you have 6 beers in you, that is, it's entertainment but that's about all.