I used to stick to that rule and get a sensible mid sized Toyota Corolla or Honda Accord that’s a few years old as needed. But in 2013 (the last time I needed to get a new car) the cost savings were really low compared to new. I think the used market was particularly hot so you’d save less that 10% of the cost, so I ended up getting my 1st and only (so far) brand new car ever.
China does have a lot of agricultural and manufacturing workers who aren’t on computers all day. And they have some pretty poor rural areas. But I’m calling bullshit on Japan’s numbers. Tokyo looks like Blade Runner at night but and the office culture is famous for long hours but no one is looking at screens? Get the fuck outta here.