General Motors Co, PSA Peugeot Citroen and Fiat SpA ran the biggest drop in European vehicles sales in 5 months as the Europe's economy tumbled closer a recession. In November registrations lost 3% from 1.10 m vehicles in 2010 to 1.07 m cars this year, the biggest fall in 5 months, said the Association of European Automobile Manufacturers. 11-month sales fell 1.1% to 12.6 m registrations.