( December 4, 2024, 9:03 AM EST) -- CINCINNATI — Consumers who allege that various vehicles manufactured by Nissan North America Inc. and Nissan Motor Company Ltd. (together, Nissan) have defective automatic braking systems failed to sufficiently establish commonality when moving for class certification, and the lower court failed to perform the appropriate analysis of challenged expert testimony, a Sixth Circuit U.S. Court of Appeals panel ruled, vacating a trial court’s certification of 10 classes....