LONDON (AP) — German carmaker Daimler endured a weak start to the year, echoing troubles at other major manufacturers, as sales in the big Chinese market stuttered. The company said Friday that its net income fell to 2.1 billion euros ($2.3 billion) in the first quarter from 2.3 billion euros during the same period a year earlier, while revenue dipped to 39.7 billion euros from 39.8 billion euros. Vehicle sales fell 4% to 773,800 units, with a double-digit percentage drop in China offsetting gains in other markets like the U.S.