The lawsuit says that the company determined that the variable valve timing assembly problems were caused by inadequate or improper hardening of the components when they were first manufactured and attempted several times to fix the problem. Heat treatment has now been added around the hole of the variable valve timing rotor lock pin to prevent this from happening. This is caused by the lock pin of the variable valve timingĪctuator not fully engaging. When the engine is started, some vehicles may exhibit a loud ticking noise from the variable valve timing actuator at first start for a couple of seconds. ![]() However, class action indicates that the company has known about the problem since November 2007, when it issued a technical service bulletin (TSB) to dealers stating: ![]() Mazda allegedly attempted to cover up the engine defects to uphold its claim that its vehicles will be “free from defects,” a statement made in its warranties, the lawsuit maintains. None of the defective engines have been in production since 2010, according to the complaint. Vehicles that allegedly have the defective variable valve timing (VVT) assembly include the Maza CX-7, Mazdaspeed 3, Mazda 6 (2.3L) Mazda3, Mazda5 and MX-5. The automaker’s standards are subjective and designed to make sure it does not have to acknowledge or repair the defect under warranty, according to allegations raised in the class action. The lawsuit claims that Mazda’s standard response to complaints about the VVT defect is to maintain that the vehicle owners failed to provide sufficient proof of engine oil changes. Unfortunately, as part of the purchase process, Mazda has concealed material facts regarding the defect from purchasers and lessors of vehicles equipped with a defective VVT assembly.” “Mazda has had actual knowledge about the VVT assembly defect since at least 2007. ![]() “Although this defect is covered under Mazda’s powertrain warranty, Mazda fails to repair the defect under warranty,” the complaint indicates.
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