A newly filed class action lawsuit alleges that Audi's EA839-family 2.9-liter and 3.0-liter twin-turbo V6 engines are equipped with defective water pumps that can fail prematurely.
According to the complaint, the faulty component can lead to coolant leaks, contamination, overheating, and in severe cases, engine damage.
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The lawsuit covers a wide range of Audi models from the 2018 through 2024 model years, including the A4, A5, A6, A7, A8, Q7, Q8, SQ5, S6, S7, and RS5.
Plaintiffs claim that the coolant module's seals, housing, and internal parts degrade under normal operating temperatures, allowing coolant to leak into the vacuum system and other components.
Repair Costs and Alleged Knowledge
Two owners are leading the case.
One California owner of a 2019 Audi A6 reportedly paid nearly $6,000 for a water pump, PCV valve, and vacuum system replacement after coolant was found leaking into vacuum hoses.
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Audi allegedly denied assistance because the vehicle was out of warranty.
A second plaintiff with a 2021 SQ5 says his coolant warning light appeared at around 62,000 miles.
After warranty expiration, he claims Audi refused help, and he paid over $1,400 for repairs.
The lawsuit alleges that Audi knew about the water pump defect as early as November 2018 but concealed the issue while continuing to sell affected vehicles.
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Audi and Volkswagen have yet to respond to the lawsuit.
