CHATTANOOGA (AP) — Volkswagen will add 800 new jobs at its Tennessee plant to boost production of the popular Passat sedan.The jobs will increase the plant’s work force to more than 3,500 by the end of the year, the German company said Thursday. The additional workers will be used to bolster the existing two shifts at the plant, and expand production to Saturday.“We’re adding a third team at this plant for a simple reason: Customers want to buy Passats,” said Jonathan Browning, the president and CEO of Volkswagen Group of America.The plant will operate 120 hours per week with the new workers, up 40 hours from current levels, he said.Browning said the extra work force will help the plant ramp up and be able to produce 170,000 vehicles next year, most of which are destined for the U.S. market. Others are exported to Canada, Mexico and South Korea, he said.Volkswagen sold nearly 23,000 Passats in the U.S. last year, an 83 percent increase over 2010.