Hyundai Motor America said it had published incorrect horsepower ratings for more than one million vehicles in marketing materials dating back a decade. The company said 1.3 million vehicles in a number of model lines were involved. The average overstatement was 4.6 horsepower. ''It has no impact on the safety or reliability of the vehicles,'' the chief executive, Finbarr O'Neill, said in a conference call late Monday. Hyundai Motor America, based in Fountain Valley, Calif., is a subsidiary of the Hyundai Motor Company of South Korea.

Published: 09 - 11 - 2002 , Late Edition - Final , Section C , Column 1 , Page 3