AUTOS

Nissan’s Debt Rating Lowered: Nissan Motor Co.’s senior debt rating has been lowered to A from A+ by Standard & Poor’s Asia, the agency announced. The lowered rating also applies to Nissan Motor Acceptance Corp., Nissan International Finance (Netherlands) and Nissan Capital of America Inc. Nissan is suffering from reduced sales and increased competition, the agency said. This has contributed to a reduction in the firm’s operating efficiency, it said. Nissan expects an unconsolidated net loss of about $160 million for the financial year ending March 31, 1993.