2021 Volkswagen Tiguan

The PCV valve does not last past 60k miles. Multiple forums and customers stating this. When the failure shows up as a check engine light symptom it has already caused a major oil leak in the crank shaft that leaks with the car off at about 500ml and is significantly worse while driving- Up to a quart of oil loss from driving 10miles. VW has had issues with the PCv valve design from 2012. I bought a 2012 Passat but it did not leak till well after 200k miles but the code would continuously go on and off.

approximately 1 year after purchase, we started having the oil light come on. Returned to dealer and they stated it was normal. This continued for approximately 4 or 5 more times. A "comprehensive" test/diagnostic was conducted and they said normal consumption but no issues. Moving now in 2026 with 40k and now out of warranty with age of vehicle, we brought it back to Scott Motors and NOW it's an issue with the head. The same common problem that they have known about with all their vehicles in this class with this motor since I believe 2018. They want to split the repair bill 50/50 and then 70/30. I stated I addressed and documented the issue years ago and now since we are out of warranty, now you find it. Please Help.

My 2021 Volkswagen Tiguan is experiencing excessive engine oil consumption. The oil level drops rapidly between oil changes, and I have had to add oil multiple times to prevent engine damage. The low oil warning light has appeared unexpectedly while driving, creating a safety hazard. I am concerned about potential engine failure, stalling, or loss of power at highway speeds. I have reviewed multiple NHTSA complaints from other 2021 Tiguan owners (IDs 11742786, 11741539, 11741067, 11739933) reporting the same oil consumption and low oil pressure issues. This indicates a pattern of defects involving the EA888 2.0 TSI engine. Volkswagen dealerships often claim this is ‘normal,’ but the frequency and severity of oil loss suggest a mechanical defect involving piston rings, PCV system, or internal engine components. This poses a serious safety risk, especially during long distance travel. I am requesting that NHTSA investigate this issue for the 2021 Tiguan model year.

The component that is failing is the Radio. The radio consistently turns off when using it and power cycles itself back on which creates a concern when I am using the phone or the Maps feature. I had the same issue with a 2019 Volkswagen Passat, that I previously owned and I now see that there are known issues with other Volkswagen vehicles for the same thing, but there is no recall on my vehicle. I have spoken to my dealership about it and they advised me that there is not a recall for the issue so I would have to pay for them to take a look at this. There are no warnings such as lamps or anything else prior to the failure happening besides if the radio has sound coming through it, you won’t hear the sound anymore and within 60 seconds it will power cycle down for about a minute and then come back on and have to completely reload. There has been no inspection by the police or manufacturer to my knowledge.

On 03/11/26 Volkswagen pushed an over the air update related for an infotainment System Software Update. Immediately upon completion of the updated the Central caution light (exclamation mark inside of a triangle) was illuminated along with the SOS warning light. This has caused by SOS safety system to not function properly. The dealer charged me $200 to diagnosis a problem VW created and stated the SOS Control Module needs to be replaced. They claim the part is on National back order for the past three months. I have been unsuccessful receiving information regarding the repair of my vehicle. I am concerned the SOS system will not function if it is needed.

Rear view mirror has come detached from the main roof and it's presented that the only option to repair this is a complete windshield replacement. If the mirror is adhered to the windshield, this presents a major design flaw and safety hazard. I should not have to replace an entire windshield to replace just a rearview mirror. Also, because this is requiring me to seek additional services outside of the VW dealership, I would have to drive without a safely secured rear view mirror, presenting a safety hazard.

Tha back up camera system is glitching out. We reset the system but is keeps freezing/blacking out after about 30 seconds. This is known issue with this model of Volkswagen.

Vehicle was just turned on and put into reverse. Dash and infotainment center lights flashed and shut off. Vehicle rolled backwards uncontrollably down a sloped driveway. Steering and brakes were not properly functioning. Vehicle came to a stop when it struck a parked vehicle in its path.

Parking brake violently engaging with every stop

When driving the Front windshield spontaneous cracked. There was a loud cracking noise, prior to the AC and vent being turned on. The crack is formed from the driver side bottom edge of the window shield and across horrizontally three feet towards passenger side same crack ending upwards slightly diagonally. There is NO Evidence of impact, crack line is smooth to touch from the outside windshield. Purchased vehicle as a Certified Pre-Owned. Owned the vehicle less than two years. And only driven the car for less than 5k miles. This is unsafe and deemed to be a design flaw.

Car is burning an excessive amount of oil

Excessive oil consumption. Paid out of pocket and 2 weeks later the same issue. Dealer is aware of this common problem and refuses to do anything. These vehicles have faulty piston rings and PCV valves.

On April 19, 2026, my 2021 VW Tiguan experienced a sudden loud gunshot-like sounding noise and my sunroof exploded. I fortunately had the screen closed, but large pieces of glass fell and were caught by the screen. It endangered me and my 3 children in the car. It was extremely stressful, as I was worried the entire sunroof would collapse on us and I was traveling at a high rate of speed. After pulling to the side of the road, further inspection showed the glass protruding upward. No sign of a rock or anything. There was absolutely no warning. I have filed a claim with insurance and plan to call VW tomorrow.

Wipers randomly start when switch is turned off. Wipers will randomly not start when wipers are turned on. Safety of others is affected due to visibility being obscured due to wipers not turning on. Injuries can occur when wipers randomly start. There was no warning prior to the problem starting.

Oil consumption issue. The vehicle is experiencing blue / white smoke from tailpipe when starting also lost of oil due to a valve seal issue with engine that requires dealers to remove head and service it

Oil consumption issues affecting all cars of this make and model

Engine has excessive oil consumption. Low oil indicator light will come on and Engine oil needs to be topped and added about every 2500 miles sometimes more often depending on driving conditions.

Tiguans have been reporting excessive burning oil consumption- reported this to the dealership and consider this "normal" but how is going through several oil containers to make sure there's enough oil in the car "normal"??? I've never had this issue with any other car- other Tiguan owners have reported this issue and it's over a 6k repair.

Here is a quick description of the issue from our Volkswagon of Huntington service report. We have had this ongoing issue for a few months now. the check engine light will come on. We get it checked, we replace a sensor, and all is good for a day or week. Then we do it again, replacing a different sensor. Now the dealer is saying the oil separator is leaking and requires repairs starting at 8,400 and going up from there as they uncover more. We have always maintained the car properly. From research this appears to be a very known issue with this model car and should be reported and covered by VW. SCANNED VEHICLE AND FOUND FAULTS PRESENT FOR SECONDARY AIR. OBSERVED OIL SEPARATOR LEAKING CUASING UPPER TIMING COVER GASKETS TO BLOW OUT ALLOWING OIL TO ESCAPE. FOUND SECONDARY AIR PORTS IN CYLINDER HEAD CLOGGED TRIGGERING CHECK ENGINE LIGHT. ADVISED TO REPLACE OIL SEPARATOR,CAM SHAFT MAGNETS AND CYLINDER HEAD TO START. APPROX 8480.00 PLUS TAX

After oil changes (always maintained at dealerships) it would require a quart of oil with in 2 days. Random starts will blow smoke out the rear. random sluggish behavior. Dealership confirmed PCV valve is causing a buildup in engine pressure which caused a premature oil pan gasket leak. Without full teardown cannot know full extent of damages caused. (which spills out of the bottom and towards tires.....) dealership and fellow Tiguan owners have all reported the same issue! with a repair cost of $1,000-8,000+. same with alot of other years as well.. The date below that i will list is for when the problem was fully confirmed (89k miles) but has always been an issue told its fine ... really noticed it after (68k miles) when i purchased the vehicle. With how many people are dealing with this it is hard to understand how we dont see an open recall for them..... also dealer said pvc valves are on back order and have been. why should one replace with oem if they won't acknowledge its a faulty part?