Oil changes are typically recommended every 5,000 to 7,500 miles, depending on your car and oil type, but a defect in a vehicle's engine can cause oil to leak or burn off, which can be damaging or even dangerous. A second class action lawsuit – unrelated to the first that was settled last year – against Volkswagen and Audi alleges just such an issue with the VW Group 2.0-liter turbo TSI engine, also known as the EA888. For those who know the company's products products, the EA888 is found in a variety of vehicles from multiple brands, ranging from the sporty Jetta GLI to the Atlas family hauler and from the entry-level Audi A3 to the genteel Q7.The lawsuit alleges the four-cylinder engine consumes oil due to defective piston rings. Owners need to add oil between services or risk damage to their engines, lowering the value of their vehicles. Several owners say dealerships will not honor their warranties to repair the issue. The EA888 is found in many VW Group models, but the lawsuit covers the following vehicles:2018–Present Audi Q32018–Present Audi Q52018–Present Audi Q72018–2023 Volkswagen Atlas2018–2024 Volkswagen Jetta GLI2018–2022 Volkswagen Passat2018–2021 Volkswagen Tiguan The Plaintiffs Several plaintiffs are listed in the class action along with descriptions of their cases against the VW Group. "Had Plaintiffs and the other Class Members known about the Defect, they would not have purchased or leased the Class Vehicles or would have paid substantially less for them," the lawsuit states. Lauren Reece says her 2021 Tiguan showed a check engine light, then started to run rough. It then failed to accelerate beyond 40 mph. The car was later found to have a cracked oil pan, a broken PCV valve, and a failed upper timing cover and seal. Her vehicle was repaired and has not experienced further issues, but Reece says the replacement parts are equally defective.Margaret Ponder said her 2021 Atlas with 61,000 miles was diagnosed with an oil leak from the timing cover, also caused by a failed PCV valve. For her part, Loretta Moutra leased a 2018 Tiguan that leaked oil from the start. She leased another Tiguan in 2022 that also leaked oil, so she terminated the lease in 2024 and replaced it witth yet another Volkswagen, this time an Atlas Cross Sport. Sidebar: That fact alone makes it hard to swallow the lawsuit's claim that had owners known the cars were problematic, they would have chosen other vehicles, because Moutra clearly kept coming back for more. No Fix Available Audi The owners in the class action say taking their vehicles to the dealership is not an adequate solution to the problem, even if the manufacturer fixes the oil leak with new parts under warranty. "Defendants have not released or made freely available a countermeasure that adequately fixes the defect, including more robust piston rings," they allege.Owners claim the replacement parts are of equal quality to the originals, meaning the oil leaks could continue even after the dealership has "fixed" the issue. It's unclear if any consumers in the lawsuit have reported cases of the engines leaking oil after being repaired, but it would give the plaintiffs a stronger argument if they did. Last year's Volkswagen Group settlement regarding the EA888 engine was related to failed turbochargers, which also caused oil consumption. Perhaps the German automaker will settle here as well.