DETROIT — January’s U.S. auto sales were a little better than a year ago, but most analysts and automakers predict a small full-year decline despite economic factors that favor the industry.

Automakers reported a 1 percent increase last month to 1.15 million vehicles, according to Autodata Corp.

But Mike Jackson, CEO of AutoNation, the country’s largest dealership group, said late-model used cars coming off leases are pulling buyers from higher-priced new vehicles. Despite tax reform, low unemployment and strong consumer confidence, he sees new-car sales falling to 16.8 million from last year’s 17.2 million.