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Cars with WORST Engines & Transmissions (Avoid!)

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1. Honda & Acura: 1.4 Million Vehicles Under Investigation for Engine Failures​


Over 1.4 million Honda and Acura vehicles equipped with the 3.5-liter V6 engine (for models such as the 2016–2020 Honda Pilot, 2018–2020 Odyssey, 2018–2020 Acura TLX, 2016–2020 Acura MDX, and others) are currently being probed by the NHTSA due to a surge in reports of connecting rod bearing failures leading to complete engine breakdowns. This is an extension of the earlier 2023 recall involving crankshaft manufacturing defects.



2. Hyundai & Kia: Theta II Engine Recalls—Costing Over $1.3 Billion​


Hyundai and Kia’s Theta II GDI engines were linked to severe issues—including metallic debris contamination that led to engine seizure and fires. A class-action settlement in 2021 addressed over 1.6 million affected vehicles, totaling around $1.3 billion in costs.



3. Toyota: Recall Fallout That Shook the “Bulletproof” Reputation​


Toyota faced massive recall campaigns between 2009–2011 involving issues like stuck accelerator pedals and floor mat interference. The fallout included estimated costs of up to $2 billion, damaging its reputation for rock-solid engineering.



4. Ford’s Record Year: 7 Million Vehicles Recalled & Rising Warranty Costs​


Ford has issued a record 7 million recalls in 2025 alone, including issues like potential instrument panel failures. Warranty claims have skyrocketed, costing the company around $2 billion in Q2 2024, or roughly 4% of sales.



5. GM’s Ignition Switch Crisis: 30 Million Cars Recalled & 124 Lives Lost​


General Motors was forced to recall nearly 30 million vehicles due to a faulty ignition switch design. These failures prevented airbags from deploying during accidents and were tragically linked to 124 deaths. GM ultimately forfeited $900 million in legal settlements.

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Summary Table

ManufacturerIssueImpact
Honda/AcuraConnecting rod bearing failures in 3.5L V61.4M vehicles under investigation
Hyundai/KiaTheta II engine seizures and fires$1.3B+ settlement
ToyotaAccelerator/floor mat recalls$2B in costs
FordMultiple hardware/software issues7M recalls; $2B warranty charges
GMIgnition switch defect30M recalls; 124 deaths; $900M settlement

Bottom Line​


Yes, these are serious, wallet-wrecking automotive issues—but not the stuff of urban legend. They are substantiated by official investigations and class-action settlements involving millions of vehicles.


If you want, I can help dive deeper into any particular case—or draft a comparison chart showing which vehicles to avoid based on year and engine type.


 
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