2021 Volkswagen Tiguan Fuel System Problems

My fuel system level indicator does not work properly when the tank is below 1/2 full, and the check engine light comes on. It does not correctly deplete, instead leaving me with no gas when it shows it still has gas available. This has left me stranded in various locations as my car runs out of gas, but doesn't show me that until it is completely empty. Most recently, it was on a very busy road in the middle of traffic. The gas gauge went from 1/2 full to empty while I was driving. Upon taking it to the dealer, they said to replace the 1 sensor, which is a very small, simple piece, they have to replace the entire fuel system, which is over $5000 in repairs. My car is only 4 years old and only out of warranty by 6 months. Further research shows this is a common issue with the make and model of my car. Many seem to happen under warranty, but with the age my car is now, many of these warranties will expire, leaving owners to have to pay to fix this outrageous, costly repair.

I purchased the Tiguan just shy of 2 years ago. Since 12/17/24 I have spent over $2,000.00 in that short of time because one incident the oil leaked out in a matter of a day. The second incident, while traveling from St. Louis to Tulsa, the oil light came on every 80 miles because the oil had spewed out. I had to replace the oil about 5 times that day. The third incident came 1,500 miles later. I came out of a restaurant in Claremore, OK and saw every drop of oil had spilled out into the parking lot. Each time I took the car to Autohaus. They only work on Volkswagens. He has been doing so since he was 14. If he can't fix it, no one can. I can't afford to keep dishing out $700 every 2,000 miles.

The oil separator in this vehicle failed resulting in other additional damages at 46,000 miles. I was not given the oil separator, upper timing cover, or lower oil pan for inspection. All maintenance in this vehicle was done timely and only touched by the VW dealer. The manufacturer warranty ended 17 days before the component failure. VW agreed to pay half for the repairs that were quoted at 1600 dollars because the warranty expired by time so closely and was under on miles. The service advisor at the dealer reached out to VW about this on his own accord before updating me on the issue because he told me that this exact component has been happening very frequently with this model/year and didn’t think this should be happening at such low mileage. This component failure rapidly causes other serious damage resulting in very high repair bills on the vehicle. The check engine light came on over the weekend (6/7) and the car was brought to the dealer Tuesday (6/10) and was driven about 75 miles between the light coming on and the car being dropped at the dealer. The diagnosis quoting email from the dealer: “the vehicles oil separator failed and caused excess crankcase pressure to be put on the plastic components of the engine, mainly the upper timing cover and lower oil pan. That pressure causes the components to crack and leak oil, which is what happened” this resulted in a quoted 1600 dollars in repair. This is very concerning. I believe that an oil separator going bad at 46,000 miles in a perfectly maintained car as per recommendations of the dealer is unacceptable. I am reporting this in hopes that a recall from the manufacturer will be forced as this is unacceptable at such low mileage and the part needs to be replaced by another manufacturer with better quality.

Fuel sensor failure caused the fuel gage on the dashboard to incorrectly indicate the amount of fuel in the tank. The vehicle had 56K miles and the entire gas tank had to be replace since the sensor is built into the fuel tank. Volkswagon would not warranty the repair. This is a safety issue because not knowing how much fuel is in the tank could leave the driver stranded in bad weather or in an unsafe place.

My car constantly gets a P24D6 error code which is a tank ventilation pressure sensor 2 issue. It prevents the car from auto starting using the remote or the VW app.