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U.S. Regulators Open Probe Into 1.4 Million Honda and Acura Vehicles Over V6 Engine Failures

NHTSA says many reported failures appear unrelated to Honda’s 2023 crankshaft recall.

Overview

  • The agency opened a preliminary evaluation on August 20 after 414 complaints of connecting-rod bearing failures in 3.5-liter V6 engines.
  • The probe covers 2016–2020 Acura MDX, 2018–2020 Acura TLX, 2016–2020 Honda Pilot, 2018–2020 Honda Odyssey, and 2017–2019 Honda Ridgeline models.
  • Regulators estimate 1,410,806 vehicles could be affected, with risks that include stalling, engine seizure, fire, or crash.
  • Combined reports from NHTSA and American Honda total about 3,012 incidents, including seven crashes or fires with no injuries reported.
  • Honda has not announced a new recall as investigators evaluate the scope, severity, and potential safety implications.