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An unexpected spike in inventory of Fiat Chrysler Automobile NV’s iconic Jeep is stoking concern that the American SUV boom that has fueled Detroit automakers’ profit is reaching its limits.

Fiat Chrysler Automobiles NV reported a smaller U.S. deliveries gain than expected, as frosty temperatures across much of the country dragged on demand even for the hot-selling Jeep SUV brand.

Fiat Chrysler Automobiles NV will pay hundreds of millions of dollars to settle a lawsuit brought by the U.S. Justice Department, which alleged some of its diesel-powered vehicles violated clean-air rules, a person familiar with the matter said.

Fiat Chrysler Automobiles is adding more muscle to its self-driving vehicle testing efforts. The company will spend more than $30 million at a new testing and development facility at its Chelsea Proving Grounds west of Detroit.

“Mild” is not a word that usually is associated with brawny pickups. But Fiat Chrysler Automobiles NV is betting it can sell more Ram 1500s by turning its famous V-8 Hemi engine into a mild hybrid, and clean up its industry-worst emissions record in the process

The cybersecurity issues that led Fiat Chrysler Automobiles NV to recall 1.4 million vehicles this month could pose a problem for cars and trucks from other automakers, the top U.S. auto safety regulator said July 31.