Struggling carmaker Stellantis sold 1.15 million cars worldwide from July to September, approximately a fifth fewer than in the same period a year earlier, the rival to Volkswagen said on Wednesday in Amsterdam based on preliminary estimates. Stellantis includes brands such as Peugeot, Citroën, Fiat, Chrysler, Jeep and Alfa Romeo. In particular, sales fell significantly in the most lucrative and important market of North America: With 299,000 vehicles, Stellantis sold 36% fewer vehicles there, and many cars from the Stellantis brands remain unsold in dealers’ lots. In Europe, the decrease was …