Lauren Silva , Jessy Edwards ย |ย  October 26, 2022

Category: Auto News
Close up of Mazda sign with blue sky in background.
(Photo Credit: JHVEPhoto/Shutterstock)

Update:ย 

  • A California federal judge certified most of the proposed classes of Mazda drivers in a hefty class action lawsuit against the carmaker.
  • The lawsuit alleges a water pump defect can lead to โ€œcatastrophic engine failureโ€ฆ at any time without prior warning.โ€ย 
  • On Oct 21, U.S. District Judge Josephine L. Staton filed an order granting the motion for class certification brought by owners of the Mazda 6 and Mazda CX-9 affected by the alleged faulty pump.ย 
  • She certified seven classes for vehicles purchased in California, Massachusetts, Michigan, Missouri, Ohio, Texas and Virginia, as well as a class for those alleging violations of Californiaโ€™s Song-Beverly Act.
  • The judge declined to certify classes of North Carolina and Louisiana drivers, saying plaintiffs from those states had not put forward arguments with standing under the statesโ€™ laws.

Mazda water pump defect class action lawsuit overview:

  • Why: The plaintiffs allege Mazda knew about a defect in its Cyclone engines that causes the water pump to fail. The defect has and can continue to lead to โ€œdeadly accidents,โ€ the complaint says.
  • Who: Mazda faces a class action lawsuit filed by 20 customers.
  • Where: The class action lawsuit was filed in California federal court.

(March 16, 2022)

A group of 20 Mazda drivers filed a hefty class action lawsuit against the carmaker for a water pump defect that they say can lead to โ€œcatastrophic engine failureโ€ฆ at any time without prior warning.โ€ The defect has caused one fatal accident already.

The water pump defect occurs in the MZI Cyclone engine in the CX-9 for model years 2008 through 2015 and the Mazda6 for model years 2009 through 2013.ย 

The plaintiffs seek to represent a nationwide class of all persons or entities in the United States who purchased, leased or own a class vehicle. There are 12 state-specific subclasses for California, Florida, Illinois, Louisiana, Massachusetts, Michigan, Missouri, North Carolina, Ohio, Pennsylvania, Texas and Virginia. There are also two subclasses related to specific California state laws.ย 

Mazda allegedly knew about water pump defect since 2007

The defect detailed by the complaint involves the internal chain-driven water pump. The pump is meant to circulate coolant through the engine while the engine is running. However, the defect in question allows coolant to leak from the water pump into the oil pan and/or other engine components, mixing it with the engineโ€™s oil and leading to destruction of the engine.

The water pump is located deep within the engine behind several other components and would cost more than $1,500 to repair or replace, according to the complaint.

Plaintiffs argue that they and the class were not told about the potential defect. However, Mazdaโ€™s internal data indicates that the company began receiving reports of water pump failures in class vehicles by at least June 2007, according to court documents. Mazda received at least 58 warranty claims for failed water pump failures in 2009. Complaints were also made to the National Highway Traffic Safety Administration.

The plaintiffs seek class certification and approval of class counsel, declaratory relief, an order preventing Mazda and other defendants from continuing their allegedly unlawful behavior, injunctive and equitable relief, damages, statutory and civil penalties, pre- and post-judgment interest and attorneysโ€™ fees.ย 

Have you experienced engine failure in your Mazda? You could be a class member! Watch this space to learn more.

The plaintiffs are represented by Joseph H. Meltzer, Melissa L. Troutner, Tyler S. Graden and Natalie Lesser of Kessler Topaz Meltzer & Check, LLP et al.

The Mazda Water Pump Defect Class Action Lawsuit is Sonneveldt et al. v. Mazda Motor of America Inc. et al., Case No. 8:19-cv-01298, in the U.S. District Court for the Central District of California.


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115 thoughts onClass certified in Mazda defective water pump lawsuit

  1. Paul Talbot says:

    Ditto. 2014 CX-9 Touring. Got Check engine code P0013. Dealer called it the โ€œcode of deathโ€ for this car. Telltale sign was to check the oil. If itโ€™s milky and bluish (from the coolant), the coolant has gotten into the oil and causes rapid engine failure. Will cost about $9500 to replace engine.

  2. Jason Millington says:

    2014 Mazda CX-9, 92,000 miles on it. Water leaking out the bottom, over heating. Parked it in the driveway all the coolant leaked out. Canโ€™t drive it called the dealership they said it is a Mazda water pump issue. Might have to replace the engine as well. So it will sit for nowโ€ฆ. Mazda needs to make good on these B.S. Ford engines they put in. They know about it and still screw the people over for profit, sorry A$$ Rat Pricksโ€ฆโ€ฆ

  3. Kim Mortensen says:

    How can we join the lawsuit? 2015 CX-9 is literally in the shop right now because this happened to us. My daughter was driving when it died while in motion. I dread thinking about what could have happened. It is now receiving a new motor costing us $10,000!!

  4. Melinda says:

    Call Mazda Corporate and file a claim immediately. I have an open case with them.

    1. Debby Quaratella says:

      Do you have a phone number?

  5. Janette Moore says:

    Happened to us too ๐Ÿ˜ฉ cost $8000 to get it fixed. Located in Utah. Sign us up!

    1. Janette Moore says:

      2015 cx9

  6. Melinda Leigh says:

    Add me to the list. My 2010 Cx-9 Grand Touring did the same thing yesterday on the interstate. Loaded down with 3 young children, car died in the middle of rush hour. No one stopped to help. Drivers were getting so angry cause we were blocking traffic. So many times we were almost hit. No warning at all. Literally died within 5 min of noticing a problem. I have kept this car in mint condition. Single mom of 3. This has been catastrophic for us. Shame on Mazda.

  7. Jace says:

    My 2015 cx9โ€ฆ same story

  8. Tanakorn HA says:

    I have 2014 cx9 with 116k with the water pump problem too

  9. Marshall Green says:

    Well.. Sign me up too I suppose. 2015 cx-9 touring. Chocolate milk in the oil. Have parked it to wait and see what happens.

  10. SONYA MARTELLI says:

    2012 Mazda CX-9, I too had a catastrophic Water Pump failure, Mazda denies any problems regarding the water pump. Also Mazda Service refuses to accept vehicle for repair as they claim they canโ€™t get the parts and I would need to wait at least 5 weeks before I could even get an appointment! 63,000 miles. I would like to join the Class Action Lawsuit.

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