Isuzu Commercial Truck of America set sales records in 2015 for Isuzu commercial trucks and parts. Isuzu dealers in the United States sold 20,725 Isuzu trucks in 2015, a 10.5 percent gain in Isuzu N-Series sales versus 2014. The company also sold 5.5 percent more parts in the U.S. in 2015 than it did in 2014.