GM Passes Toyota to Lead J.D. Power Survey for First Time

General Motors Co. led one of the auto industry’s most closely watched quality measures for the first time since the survey began almost three decades ago, pacing U.S. carmakers producing their best cars in a generation.

All four of GM’s U.S. brands were ranked above average in J.D. Power & Associates’ Initial Quality Study, led by its GMC truck brand, which trailed only Volkswagen AG’s Porsche sports-car line. Chevrolet, Detroit-based GM’s biggest-selling brand, ranked fifth in the market, leapfrogging Toyota Motor Corp.’s namesake brand, which had the seventh-best score.