Buick slips to sixth in dependability after sharing No. 1 ranking last year.

NEW YORK — Lexus once again stands alone atop a closely watched list of vehicle dependability after Buick slipped from the No. 1 spot it shared with the Japanese luxury brand last year, J.D. Power and Associates says.

It's the 14th straight year Toyota Motor Corp.'s high-end brand has held the highest ranking in the annual study, which measures problems experienced by the original owners of vehicles after three years. Lexus had 120 problems per 100 vehicles, down from 145 last year.

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