China has looked at the luxury saloon rulebook, set fire to it, and then built something absolutely enormous. This is the BYD Great Han, a four-door flagship that stretches to a frankly ridiculous 5.3 metres long.

In fact, it’s longer than a standard Mercedes-Benz S-Class, which is a bit like turning up to a heavyweight boxing match and discovering your opponent is a small bungalow.

And it isn’t just big. The range-topping all-wheel-drive version produces a thunderous 570 kW, or 764 horsepower in old money. That’s enough to shove this luxury barge towards 270 km/h while still claiming up to 880 km of range. Prefer efficiency?

The rear-wheel-drive model promises an almost unbelievable 1,008 km on the Chinese CLTC cycle.

There’s LiDAR on the roof, advanced driver assistance, air suspension expected from BYD’s latest tech arsenal, and enough electronic wizardry to make a fighter jet feel under-equipped.

Meanwhile, the plug-in hybrid version offers a 370 km electric range before the petrol engine even needs to wake up.

The remarkable thing is that this isn’t some low-volume concept. BYD intends to sell it in meaningful numbers and a reasonable price, starting from $35,000.

Which means Europe’s established luxury brands may soon find themselves staring into the rear-view mirror and seeing a giant Chinese saloon rapidly filling it. Quite rapidly, in fact.