March U.S. Auto Sales—Kia Optima
Kia Optima—Kia’s stylish mid-size sedan is on a serious roll, garnering a 117.8 percent sales boost in March on deliveries of 15,008 units. With both the Kia Soul and Kia Sorento also topping 10,000 sales last month, Kia is the fastest-growing car company in the U.S.