Paris's Mondial de l'Auto has always been a stage for horsepower, and this year the loudest statement came from the smallest cars. As heise reports in its walk through the show, compact models — not hypercars and not flagships — are what drew the crowds.

The reason is arithmetic. European buyers have absorbed years of price inflation, the end of many purchase incentives, and the arrival of Chinese brands that treat the 20,000-euro hatchback as a volume product rather than a loss leader. In response, European makers are finally shipping the cars they promised: Renault's revived Twingo, Volkswagen's ID.Polo, Citroën's C3, Fiat's Grande Panda, Dacia's Spring — a cluster of electric models gathered around the 20,000 to 25,000 euro band.

That band is the whole ball game. The price of an electric car is set less by the badge than by the battery cell, the tariff regime and the platform. It explains why Chinese entrants could arrive with a price European groups long considered unprofitable: higher volume, vertically integrated cells, shorter development cycles. Europe's reply — cars built on existing platforms and, increasingly, on locally produced cells — is only beginning.

Building a cheap EV is not the same as selling one profitably. Margin and volume pull against each other: every entry-level car sold can dilute a manufacturer's profit as long as cell costs stay high. Add the European Union's fleet CO2 targets, which force electric sales regardless of demand, and the countervailing tariffs on Chinese vehicles designed to narrow the price gap, and the affordable segment becomes both the biggest opportunity and the thinnest margin in the industry.

The signal from Paris is clear: the cheap end of the market has gone from marketing exercise to main event. The upper floor of the show remains an engineering display — prestige, range records, concept cars — but the business of the next five years is being decided a floor lower.

Still open: whether the entry prices shown hold up depends on cell prices, tariffs and production ramp-up; final market prices are not locked at the time of the show.