Toyota brand sales fell 7.2 percent in December to 172,048, pulled down by falloffs in sales of its pickups as well as its entire sedan lineup. The brand’s best-selling vehicle, the RAV4 crossover, continued to roll as it recorded an 11 percent gain. Toyota’s other light trucks, with the exception of the low-volume Land Cruiser, posted declines. The brand’s car sales fell 8.5 percent and light trucks fell 6.5 percent.