Tesla's recent robotaxi test in Austin has made headlines, but under the surface, cracks are appearing in its core business. New data from the European Automobile Manufacturers Association (ACEA) shows that Tesla's electric vehicle (EV) registrations in Europe fell 27.9% year-over-year in May, to 13,863 units. This contrasts sharply with the broader EV market in the region, which grew 25% in the same period. May marked Tesla's fifth consecutive month of declining sales in Europe, though the drop was less severe than April's 49% plunge. Year to date, Tesla's European registrations have fallen 37.1% to 75,196 units. Country-specific data reported by Reuters paints an even grimmer picture. In France, new Tesla registrations dropped 67% in May; in Sweden, sales slid 53.7%; Denmark and the Netherlands saw drops of 30.5% and 36%, respectively; and Portugal suffered a dramatic 68% decline.