PACCAR reported earnings of $327.3 million (91 cents per diluted share) for the first quarter of 2012 compared to $193.3 million (53 cents per diluted share) in the first quarter last year.

First quarter 2012 net sales and financial services revenue increased 45 percent to $4.78 billion, compared to $3.28 billion reported for the first quarter of 2011.

The Bellevue-base company reported Q1 consolidated sales and revenue of $4.78 billion and total assets of $18.16 billion.

PACCAR is a global technology leader in the design, manufacture and customer support of high-quality light-, medium- and heavy-duty trucks under the Kenworth, Peterbilt and DAF nameplates. PACCAR also designs and manufactures advanced diesel engines and provides financial services and information technology and distributes truck parts related to its principal business.