The Mitsubishi transmission problems allegedly occur due to slippage of the CVT belt, contamination of the hydraulic pressure circuit and other internal components, miscalibration of the CVT control unit and an inadequate CVT cooling system.

Mitsubishi drivers describe the transmission problems as “juddering” or “shuddering” when trying to accelerate, allegedly causing severe safety problems when driving.

Mitsubishi customers also allegedly hear the transmissions making "clunk" sounds when drivers slow down or accelerate at slow speeds. The Mitsubishi CVTs allegedly completely fail and require replacements that are allegedly as defective as the original transmissions.

According to the plaintiffs, since 2014 Mitsubishi has been aware of the CVT problems and how the transmissions need frequent repairs and replacements. And the plaintiffs say even though Mitsubishi knew about the alleged transmission problems, the automaker continued to install the CVTs in vehicles.