Mercedes has announced today that sales of the 2010 Mercedes-Benz E-Class are off to a successful start, with 40,000 units of the new model being delivered to customers since its launch in spring of this year. This success should continue to build momentum going into the latter half of the year, as the 2010 E-Class is entering a number of key markets (such as the U.S. earlier this month) as well as expanding to include a station wagon (celebrating its world premier at this year’s IAA in September).