Millions Of Hondas Could Have Faulty Engines
The National Highway Traffic Safety Administration (NHTSA) has launched a new investigation into more than 1.4 million Honda and Acura vehicles in the United States after hundreds of reports of engine failures tied to the automaker's popular 3.5-liter V6.
Key Points
- NHTSA has opened a new investigation into 1.4 million Honda and Acura vehicles after 414 reports of engine failures linked to connecting rod bearing defects.
- Models under review include the Acura TLX and MDX, Honda Pilot, Odyssey, and Ridgeline equipped with the 3.5-liter V6 engine from 2016–2020.
- The probe follows a 2023 recall of 249,000 vehicles for related crankshaft issues and could lead to expanded recalls if the defect proves more widespread.
According to NHTSA documents, the regulator received 414 complaints of connecting rod bearing failures that, in some cases, led to complete engine shutdown. The new probe covers a wide range of models: the 2018–2020 Acura TLX, 2016–2020 Acura MDX, 2016–2020 Honda Pilot, 2018–2020 Honda Odyssey, and 2017–2019 Honda Ridgeline.
The new investigation follows a 2023 recall of roughly 249,000 Honda vehicles for a similar crankshaft defect that could also cause bearing wear and seizure. At that time, NHTSA looked into 1.4 million vehicles but closed the case after Honda’s recall.
NHTSA did say the new evidence gathered as part of the probe suggests Honda is dealing with a different issue affecting crankshaft-related durability. But with the failure reports mounting outside the previous recall's scope, the agency says it needs to “more thoroughly evaluate the scope and severity of the potential issue” and determine if a further recall is necessary."
So far, Honda has not issued new recall notices related to the latest investigation.
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An experienced automotive storyteller and accomplished photographer known for engaging and insightful content. Michael also brings a wealth of technical knowledge—he was part of the Ford GT program at Multimatic, oversaw a fleet of Audi TCR race cars, ziptied Lamborghini Super Trofeo cars back together, went over the wall during the Rolex 24, and wrenched in the intense IndyCar paddock.
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Dang, sorry to see Honda going down the tubes. I've owned 6 or 7 Honda's, but the bulk of them were built in Japan and pretty much bullet proof.
Are the Hondas that are experiencing the failures built and assembled in North America?
All Honda's engines are made in the US, for US built cars. And some like the Type-R are shipped from here to Japan.
Every V6 engine listed are the direct injected engines. When they went to these, they increased oil capacity to 5.7 qts. And, extended the change interval. Using 0w20 (green credit bs). Extended intervals, mixed with DI, which will cause fuel diluted engine oil, is a recipe for issues.
5k/6month max intervals. Not the 1 year bs.
All manufacturers trying to get the green credit bs for long intervals with ultra thin oils are having issues.