DETROIT -- Chrysler's first-quarter profit tumbled 65 per cent as shipments of cars and trucks fell while it prepared factories to launch several key new vehicles.

The Auburn Hills, Mich., company said Monday that it earned $166 million in the January-March quarter, compared with $473 million a year ago. Revenue fell 6 per cent to $15.4 billion.

Chrysler, which is majority-owned by Italy's Fiat SpA, said worldwide vehicle shipments fell 6 per cent during the quarter to 574,000. Chrysler, like other automakers, books revenue when it ships vehicles to dealerships.

The company attributed the decline mainly to the end of production of the aging Jeep Liberty midsize SUV at a factory in Toledo, Ohio, last year. That factory is being prepped to build the Liberty's replacement, the all-new Jeep Cherokee, starting in the second quarter. Chrysler shipped 31,000 fewer Liberty models than it did a year ago.

Also, factories that build the 2014 Grand Cherokee large SUV and the 2013 Ram Heavy Duty pickup truck were slowed by the changeover to the freshened models, the company said. And international shipments also were down due to the faltering economy in Europe and import restrictions in Latin America, Chrysler said.

Automakers frequently see shipments and sales drop as they retool factories for updated models, but CEO Sergio Marchionne clearly was frustrated with Chrysler Group LLC's transitions. Still, the company expects to recover in the second half of the year when dealers are fully stocked with new vehicles. Chrysler kept its guidance of $2.2 billion in net income, revenue between $72 billion and $75 billion and shipments of 2.6 million to 2.7 million vehicles.

Marchionne, who also is CEO of Fiat, told analysts Tuesday that the quarter's results were "not so glorious."

He said that Chrysler must flawlessly execute the Cherokee launch and work hard to meet full-year estimates. "There's not a guy in this house who thinks it's going to be a walk in the park," he said.

He said it was unfortunate that Chrysler reported a poor quarter just after Ford Motor Co. released strong earnings. Ford's first-quarter profit rose 15 per cent to $1.6 billion as record earnings in North America tempered big losses in Europe. Ford's sales were up 10 per cent worldwide.

"To be perfectly honest, I'm envious," Marchionne said.

The 2014 Grand Cherokee went on sale last month, while the 2013 Ram Heavy Duty trucks went on sale starting in January. Chrysler expects to begin selling the Cherokee sometime in the third quarter.

Fiat was given management control of Chrysler in 2009 when the troubled company nearly ran out of cash and had to be rescued by a U.S. government bailout. Now, with the economic troubles in Europe, Chrysler is providing a financial lifeline to Fiat, which owns 58.5 per cent of Chrysler.

Fiat on Monday reported a loss of $108 million (83 million euros) for the first quarter because of weak sales in Europe and Chrysler's lower earnings.

Chrysler finished the first quarter with $11.9 billion in cash, compared with $11.6 billion at the end of 2012. Debt was down $100 million from the end of the year, at $12.5 billion.

During the first quarter of 2012, Chrysler posted its biggest profit since leaving bankruptcy protection in 2009.

The first-quarter profit decline came even though worldwide and U.S. sales were up 8 per cent from a year earlier.

AP Auto Writer Dee-Ann Durbin contributed to this report