The average manufacturer incentive per vehicle sold in the United States was $US2,287 in April 2003, up $581 or 34.1% from April 2002 and up $52 or 2.3% from March 2003, the website Edmunds.com said. On average, vehicles sold 65 days after arriving on dealer lots in April 2003 compared to 64 days in March 2003 and 52 days in April 2002.