Sales of new cars and trucks increased 9 percent in December, a gain that put total sales for 2012 at about 14.5 million vehicles — the industry’s best performance in five years, according to the research firm Autodata.
That represents a 13 percent increase over 2011, and raises expectations that demand will continue to rise as more Americans need to replace their aging vehicles with new models.
Auto executives forecast that the United States market would grow to at least 15.5 million this year and possibly higher, if housing starts and other economic factors continue to improve.
“For the industry, 2012 was mission accomplished,” said Jesse Toprak, an analyst with the auto research site TrueCar.com. “Companies are hitting their sales goals, and they are doing it with fewer incentives.”
Much of the growth has been concentrated in the comebacks of Toyota and Honda from supply chain disruptions caused by the earthquake and tsunami in Japan two years ago. And while automakers like Chrysler and Volkswagen posted hefty increases throughout the year, the two biggest American companies, General Motors and Ford Motor, lagged the overall gains.
December was a microcosm of the year’s results, as G.M. and Ford on Thursday reported smaller sales increases than those of their chief domestic, European and Asian rivals. G.M. said sales in December increased 4.9 percent, compared with the same month a year ago, primarily because of new products like the Cadillac ATS sedan and higher incentives on its Chevrolet Silverado and GMC Sierra pickups.
The company had been losing ground in the high-profit pickup segment until it added discounts to the Silverado, which posted a 6.1 percent sales increase in December, and the Sierra, which was up 13.4 percent. For the year, G.M. sold 2.59 million vehicles, an increase of 3.7 percent from 2011.
G.M.’s head of United States sales, Kurt McNeil, said the company expected significant growth to about 15.5 million vehicles industrywide this year. He noted that Tuesday’s pact on the fiscal crisis in Washington removed potential concerns for consumers shopping for new vehicles.
“We are especially pleased that the politicians on both sides of the aisle in Washington were able to compromise,” Mr. McNeil said in a conference call with analysts on Thursday. “The short-term crisis has passed.”
Ford reported a slight sales increase of 1.6 percent in December, as safety recalls for its new Escape S.U.V. and Fusion sedan depressed its overall results. Ford said that sales of the Fusion dropped 10.8 percent during the month, and Escape sales slid 21.3 percent. The company has been plagued with multiple recalls on engines and other parts on the new vehicles, which are usually among its strongest sellers.
The drop-off was mitigated by strong results for Ford’s two smallest cars, the Focus, which increased in sales by 58.3 percent, and the Fiesta, which was up by 52.8 percent.
For all of 2012, Ford’s United States sales increased 4.7 percent, to 2.24 million vehicles. Ken Czubay, head of Ford’s United States sales and marketing, said the company’s small-car sales were its best in more than a decade.
Ford predicted that industry sales could possibly reach 16 million vehicles in 2013, as more consumers trade in older models and buy new, more fuel-efficient ones. That peak hasn’t been reached since sales of 16.1 million in 2007.
Chrysler, the smallest of the Detroit companies, was the star performer in December, with a 10.4 percent increase.
The company’s new compact car, the Dodge Dart, gained traction with sales of 6,100 — its highest monthly total since it was introduced last summer. Much of Chrysler’s lineup — ranging from Jeep S.U.V.’s to the tiny Fiat 500 — posted sales records for the month of December. For the year, Chrysler said it sold 1.65 million vehicles, a 20.6 percent increase from 2011.
Toyota reported a 9 percent sales gain in December, which was one of the weaker months in its turnaround in 2012. The company said it sold 2.08 million vehicles in the United States for the full year, which was a 26.6 percent gain over 2011. Its three top-selling vehicles — the Corolla compact car, Camry sedan and Prius gas-electric hybrid — accounted for nearly half of its overall sales for the year.
Analysts said Toyota appeared poised to outperform the overall market this year as well.
“Fresh products like the all-new RAV4 S.U.V. should help keep the momentum going,” said Jessica Caldwell, an analyst with the car research site Edmunds.com.
Honda ended the year on a high note, reporting a 26.2 percent jump in sales in December in the United States. Its bellwether cars, the Accord and Civic, led the way, each with increases of more than 60 percent. For the year, Honda said it sold 1.14 million vehicles, a 24 percent gain from 2011.
Other automakers had mixed results. Nissan said its December sales dropped 1.6 percent, but the company ended 2012 with a 9.5 percent gain for the year.
Volkswagen closed the year with another banner month. The German automaker reported a 29.9 percent gain for December and a 30.6 percent increase for the full year.