It's just one car. It has this effect where people who buy an EV are disproportionately likely to buy this one car.

Non-EV crossovers as a whole massively outsell it. Also VW sells more EVs than Tesla does in Europe also, it just is spread across multiple models.

But if you are just looking at which car sold the most it's that one.

It won't last. All the European car companies are targeting Tesla and making gains. Another car (likely from a European make) will take over to become the most sold car in Europe.