2022 Volkswagen Tiguan power train problems

“2022 VW Tiguan SE had PCV (positive crankshaft ventilation) also known as air-oil separator failed just outside of warranty creating a pressure cooker like effect in the engine which caused several seals and hoses, (such as the upper/front timing cover gaskets, rear main seal, and valve stem seals) to fail. The oil pan gasket was also destroyed. Although I was fortunate enough to be able to drive from my house around the corner to my local mechanic, this could have become a dangerous scenario considering most of my driving is done on busy freeways -- this could have caused severe oil slicking, sudden loss of power, and/or total engine failure. All of which could have resulted in a fatal, multi-vehicle accident. This appears to be a relatively common incident involving this particular year and model according to a New Jersey federal case ([XXX] et al v. Volkswagen [XXX] et al.), and several other complaints found.”

“The vehicle intermittently fails to accelerate normally from a stop, especially in hot weather and when the A/C is running. When pressing the accelerator, the vehicle can hesitate for an extended period before moving. In a recent incident recorded on video (reference attachment), I pressed the accelerator and the vehicle failed to respond normally for more than 10 seconds, requiring me to pull over. This creates a serious safety risk when entering intersections, making U-turns, crossing traffic, or pulling into traffic, because the vehicle does not respond when acceleration is needed. The issue is intermittent and more frequent and severe during summer temperatures, when the AC is running continuously. The concern has been reported to the Volkswagen dealer multiple times. Dealer repair attempts were made in 2025, but the issue still exists. An independent mechanic also inspected/tested the vehicle and confirmed there is an issue, but advised that it likely requires Volkswagen-specific diagnosis, software, adaptation, or calibration. No consistent warning light appears before the hesitation occurs. The vehicle is available for inspection upon request. I have…”

“I am submitting this complaint regarding my Volkswagen vehicle because it has experienced two recurring defects during the warranty period that remain unresolved despite repeated repair attempts by the dealership. Issue 1 – Excessive Oil Consumption The vehicle has had a persistent excessive oil consumption problem since the warranty period. The dealership has attempted to repair this defect six times, including replacing an engine valve, but the issue continues. The vehicle still consumes excessive oil, requiring frequent monitoring and topping off. This creates a serious safety concern because low engine oil can result in engine damage, sudden loss of engine power, engine seizure, or an increased risk of fire while driving. Issue 2 – Electrical System Failure The vehicle has also experienced ongoing electrical problems involving the keyless entry system, repeated 12V Battery Low warnings, inoperative interior lights, and loss of connectivity with the Volkswagen mobile app. These problems have persisted despite nine repair attempts by the dealership and remain unresolved. The vehicle has spent a significant amount of time at the dealership throughout 2025 and…”

“After replacing cylinder head, rack and pinion and steering assist I went to dealer just after warranty passed they told me that the oil separator and auxiliary/ secondary water pump. Car continues to have issues. Mainly with engine. Car could break down when driving with no oil getting to engine”

“Purchased new; problems began early in ownership and have recurred despite multiple dealer visits. At ~75,995 miles in July 2025, the vehicle developed a significant engine oil leak. Multiple inspections have found the engine oil level low due to leaks from cracks, and the dealer also verified excessive crankcase pressure from a faulty PCV system that forced oil past sealing surfaces. Parts replaced included the PCV/separator, upper timing cover, a related pipe, and the oil filler funnel; DTCs were cleared and the vehicle was returned as “operating to specifications.” Despite these repairs, the vehicle has an ongoing pattern of engine problems, including warning lights and loss of power/limp mode while driving. This creates a safety risk due to sudden power reduction and the possibility of engine damage from oil starvation and continued leakage. I have repair records documenting the July 2025 diagnosis and parts replaced, prior visits showing repeat engine/drivability issues, and notes reflecting low oil observed on multiple inspections. Volkswagen denied assistance and directed me to BBB AUTO LINE; I am refiling with BBB and reporting this safety concern to…”

“My Volkswagen Tiguan suddenly and without warning blew a large amount of smoke out of the exhaust along with oil while driving at highway speeds - causing the cars behind me to lose visibility and possibly be covered with oil further reducing their visibility due to the VW manufacturers faulty crankcase breather/pcv valve. After this happened the car dash lit up with warnings and went into "limp mode" where I was not able to exceed 2500 rpm which is very dangerous when on the highway - luckily for my safety at this point I was on a side road. When I checked the engine I found no oil was left in it, it had been sprayed all underneath and up the back, which reduced visibility in the window. I was responsible for towing it to the dealer and was given no loaner despite being under warranty. Leaving myself and children without a vehicle. The dealer confirmed that my VW Tiguan had a faulty crankcase breather which caused over pressurization and pushed up the valve seals and cracked the oil pan. They only replaced those things and not the fouled spark plugs or oil filter from the crankcase breather failure which can cause more engine damage and dirty emissions.”