What year are MaxxForce engines bad?

The Notorious History of MaxxForce Engines: A Timeline of Reliability Troubles

MaxxForce engines, manufactured by Navistar International, gained notoriety for their persistent reliability problems, particularly during a specific period of time. Here’s a breakdown of the years when MaxxForce engines were known to be notoriously bad:

• 2011-2014: This period marked the height of MaxxForce engine issues. Numerous owners reported experiencing a range of problems, including:

  • Engine failures
  • Excessive oil consumption
  • Emissions system malfunctions
  • Turbocharger failures

• 2020: In a landmark legal settlement, Navistar agreed to pay $135 million in a class-action lawsuit brought by MaxxForce engine owners. The settlement addressed claims of engine defects and premature failures.

Despite the settlement, some owners continued to experience problems with their MaxxForce engines and pursued individual lawsuits against Navistar. The engine’s reputation for reliability issues remained tarnished, leaving a lasting impact on the company and its customers.

The combination of widespread defects, legal actions, and consumer dissatisfaction ultimately resulted in Navistar discontinuing the production of MaxxForce engines in 2017. The company replaced them with a new lineup of engines designed to address the previous reliability concerns.

It’s important to note that not all MaxxForce engines manufactured during this period experienced severe problems. Some owners reported satisfactory performance and longevity from their engines. However, the overall reputation of the MaxxForce engine line was significantly damaged by the widespread reliability issues.

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