Technology

There are several different problems here and banning Chinese cars is possibly the worst solution. And with Trump and magats in charge, a better solution is off the table anyway.

Problem 1: American automakers don't make anything good and it's all expensive.

Problem 2: Americans need jobs, everyone buying their (second) most expensive belonging from abroad transfers manufacturing jobs abroad.

Problem 3: EV transition in the US isn't going as strong as it should be.

Problem 4: China has EV subsidies for cars sold to other countries. This allows for dumping stock at below cost prices, after already having super low production costs (among other things China is the world's battery manufacturer, Chinese EVs get batteries for much cheaper; also Chinese labor costs are at most a quarter of union labor in the US). Usually EV subsidies, if they exist, are on purchasing, not production.

The solution, to me, isn't banning Chinese EVs. It's a further increase of tariffs on cars made in China and then that tariff money should be used to fund an EV purchase subsidy so that all EVs get cheaper for the end user to buy (yes, said subsidies would also apply to Chinese EVs). Now if BYD or whoever wants to sell a ton of cars in the US, they have to manufacture in the US, which means they have similar costs to other manufacturers (minus the batteries of course, nothing to do about that without causing a ton of issues. You can't just increase tariffs on Chinese batteries because non-Chinese manufacturers need them too).

My proposed solution would directly affect #2 and #4 in a positive manner, be better for #3 than outright banning Chinese EVs, but not as good as simply allowing them to dump nearly-free cars on Americans (which would of course increase in price once the competition is dead) and forces the American automakers themselves to sort out #1 because right now much of their competition is the German big 3 and Toyota, all of which are expensive too (shit, I consider Toyota more expensive than the Germans because I look at used cars, I love depreciation)

But what do I know, I'm not American and don't know shit about economics and trade wars and don't even own an EV.

Japanese cars, hybrids aside, aren't efficient. They're more efficient than American trucks of course, but they achieve low fuel consumption only through their small size.

I'm not kidding when I tell you that I achieved the same highway fuel consumption on my mate's 2005 Mazda 3 1.6, 5 speed manual, as I did on my 1999 Chrysler 300M 3.5, 4 speed auto. The Chrysler had just over twice the power and it was a bigger car. And older. AND it was an old slushbox auto. The important considerations: Despite all the extra length, width and engine size, the weight difference somehow was only about 300 KG. And the big engine had a wide enough torque curve that they could allow for really tall gear ratios, it sat at about 1500-1600 rpm cruising at 90 km/h in 4th gear. The Mazda I believe was nearly 2500 rpm at 90 km/h in 5th, but I could be remembering that wrong.

Around town the Chrysler lost more of its fuel economy than the Mazda of course, but then it was a huge ass car with a huge engine - the difference was still nowhere near what one would expect it to be. And of course with a 3.5 exactly when the gas prices were at their lowest in ~2015-2016, well, I accelerated away from every light with a grin on my face so that probably makes up for much of the city fuel economy difference (which I honestly don't remember the numbers for - it varies by traffic density anyway and I didn't drive the Mazda in cities much, it wasn't mine).

I then drove a ~2005 BMW 5 series diesel (E60 530d). Completely blew both of those out of the water with fuel economy. Think I got 4l/100km on the highway when the other two were 6-6.5.

You are right, though. Efficient cars are buildable today, there's just close to no reason to do it in the US where gas is essentially free compared to, say, the EU. It's the same reason people in Gulf states love driving their Nissan Patrols (Nissan Armada in Yank terms). The fuel's so cheap, fuel economy doesn't matter.

The brutally honest truth is that people are just willing to pay more for bigger cars and not just a little bit more, but more than the manufacturing cost increases with size. Make a car bigger, it gets 20% more expensive to produce but people will pay 50% more for it. It's a no-brainer.

You can still buy cars that get <=4 l/100km on the highway, even with modern emissions requirements messing shit up for you (DPF regen cycles cause diesels to use more fuel for example).