Crankcase (pcv) problems of the 2020 Volkswagen Tiguan

The crankcase breather valve (pcv system) on my 2020 Volkswagen Tiguan failed, which caused catastrophic engine damage. Vw southtown diagnosed the engine as condemned and stated that a full engine replacement is required. Prior to the engine being condemned, I have already spent $3,787. 59 in repairs at vw southtown addressing recurring oil-related issues caused by the pcv valve being stuck closed. This caused an excessive crankcase pressure buildup of over 0. 5 psi, as documented on the vw service repair order. The failure occurred while my husband was driving our [xxx] son in the car, and the warning message immediately displayed on the dashboard was: “12v battery not charging. Stop engine. ” this sudden loss of engine function and dashboard warning posed a serious safety risk, as it could have resulted in loss of power or control while driving. The problem has been confirmed and documented by an authorized vw service department, including detailed repair orders and technical diagnosis. Prior to failure, there were oil-related warning lights and symptoms of excessive oil pressure, which appeared intermittently and indicated the underlying pcv failure. Research indicates this is a known, widespread issue affecting 2020–2021 Tiguans, with multiple owners reporting breather valve/pcv failures leading to oil loss, excessive crankcase pressure, and engine damage. Information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

I am reporting excessive engine oil consumption on my 2020 Volkswagen Tiguan. The vehicle consumes approximately one quart of oil per 1,000 miles. The vehicle has already undergone multiple diagnostic and repair attempts, including pcv-related repairs, all paid by the owner. Despite these repairs, the excessive oil consumption continues. Volkswagen and the dealership have stated that this level of oil consumption is “within range” and have required additional paid testing to further evaluate the issue, even though prior repairs failed to resolve it. I am concerned this reflects a broader engine design or component issue, as similar oil consumption problems have been widely reported by other Tiguan owners. I am submitting this complaint to document the issue and request further review. The issue of oil cosumption was reported after the third or fourth oil change before the 50,000 miles waranty.