That is the sort of thing that causes problems, and even Trump has a point. If China or another country subsidizes the development and even the sales of products in other countries(meaning, it SHOULD be $25,000 but it comes down to $10,000 because the Chinese government is paying to reduce the prices outside of China), then that's not fair without the US Government turning around and trying to sell more expensive products cheap in China to hurt THEIR domestic companies.
Now, a more realistic and fair comparison, many of those inexpensive vehicles do NOT meet the safety requirements in the USA, so the versions here would need more airbags and other things, so the price goes up. Again, if you get rid of subsidies to sell products outside of the country of origin for less money, those vehicles would probably be more expensive. How much money does it cost to actually transport a car from China to the USA by the manufacturer, it's not going to be cheap.
While the US government gives subsidies to SOME companies, the big subsidies are to arms makers, because the US government is obsessed with war.