Last year was tough for Honda, which suffered supply chain difficulties because of the earthquake and tsunami in Japan as well as flooding in Thailand. Additionally, the newly designed Honda Civic was poorly received. Honda's U.S. sales declined 6.8%, compared with a 6.7% decline for Toyota. Five of the seven top U.S. automakers gained ground, and the total market gained 10%. Meanwhile, sales of the Accord declined 17%, to 235,625, while sales of the Civic declined 15%, to 221,235. They were the two biggest losers among the top 15 vehicles. "Honda is using the Detroit Auto Show -- in the backyard of the Detroit Three -- to broadcast to the world that both the Honda and Acura brands are back with an inventory pipeline replenished from last year's Japan earthquake and the promise of new core products," said Edmunds.com analyst Michelle Krebs, in a statement. The new Accord will be the same size as the existing model, but it will have a shorter wheel base and less weight, making it more fuel efficient. "When the concept Accord hits the market in the fall, Honda will have revamped its three core models -- Civic, CR-V and Accord -- that account for two-thirds of its U.S. sales," Krebs said.