> I wonder how many of the cars manufactured today are still here after million kilometers

The overwhelming majority of 1980s Toyota Tercels do not make it to a million kilometers. This one didn’t, either. It has had every part replaced, many multiple times over.

The owner has 3 donor parts cars and there’s a photo of his piles of parts like alternators. The original car didn’t last a million kilometers. He’s just been replacing parts constantly.

> My guess is none as they are impossible to fix yourself.

No they’re not. I have a lot of car friends and we all do most of our own work. One of them has now opened a shop and services BMWs including engine rebuilds of modern engines.

This is a myth. Service manuals are available. Even the digital repair tools are widely pirated, but you can generally buy a short term license to use them yourself if you want.