Volkswagen Tiguan water leak problems

Filed Jun 18, 2026 · GA

Started to smell a musty odor in my 2020 Tiguan. Had no idea where it was coming from. Repeatedly wiped down and vacuumed the car; but the smell would not leave. Eventually my husband realized that the carpet in the back seat area under the floor mats was wet and smelled very bad. We used a wet/dry vac to pull the water out. But it only returned. Mold has now started to develop and grow on the carpet on both sides of the car in the back. This is very bad as I don't want me and my family breathing in mold. Also, I purchased the car in late March of 2024 and have only had it for just a little over two years. Since I've had the car we have gotten all routine maintenances completed including the 80K mile service. After reading online I see that this is a COMMON problem with VW Tiguan's where either the Sunroof leaks into the car or the A/C drain causes issue; in both cases it causes water leaks and mold. Tried calling VW and Audi of America to explain and see if they would buy the car back, but was advised due to the year and mileage they could not. This is sad to me because this is dealing with MOLD. VW is aware of these issues and seems to not care if people are left finishing out financing on a loan with a car that leaks and causes mold. I'm even seeing that on the federal safety agency website complaints section for Tiguans, that multiple people have registered complaints about the same issue. Attaching picture of mold that is growing in back area.

Filed Mar 24, 2026 · Airbags, Body · NY

My 2018 Volkswagen Tiguan experienced a failure of the airbag control module caused by water intrusion through the HVAC access area and failed seam seal tape at the cowl support. The dealership confirmed that water leaked through a factory seam, accumulated at the airbag module, and caused the module to fail. The airbag warning light is illuminated, and the system is inoperable. This failure matches the same defect pattern covered under Volkswagen’s recall campaigns for the Atlas and Atlas Cross Sport (water intrusion leading to airbag control module failure), but my VIN is not included. The root cause and safety implications are identical: water entering through a body seam/HVAC area and compromising the airbag system. This is a safety‑critical issue that disables the airbags and creates a risk of injury in a crash. I am requesting the federal safety agency review this defect for potential recall expansion. Dealership Findings: • Water present at airbag control module • Water leaking through HVAC access hole • Failed seam seal tape at cowl support • Water accumulation damaging the airbag module • Cowl trim cracked and repaired • Recommended replacement of airbag control module and seam sealing tape • Estimated repair cost: $1,377 + tax Safety Concern: Airbag system is disabled due to water intrusion from a factory seam. This creates a risk of injury or death in the event of a collision.

Filed Feb 25, 2026 · Airbags, Electrical · NJ

Experienced water leaks due to improperly routed sun roof drains. Experienced air bag electrical malfunctions, locking doors and unlocking doors, and air bag sensor/wiring harness inside passenger door.

Filed Sep 25, 2025 · Body, Visibility · 69,000 miles · MI

The contact owns a 2019 Volkswagen Tiguan. The contact stated that after a heavy rainstorm, approximately 4-inches of water was discovered in the rear driver’s side floor and on the rear driver’s side seat. Upon inspection, the contact discovered mold inside the vehicle due to the rainwater entering the vehicle. The contact stated that the failure was due to a faulty drainage from the sunroof. The cause of the failure was not determined. The manufacturer was not notified of the failure. The failure mileage was 69,000.

Filed May 23, 2024 · NY

I own a 2014 VW Tiguan SEL 2.0T 4MOTION. I took my VW to the Dealer (Prestige Imports, 44 Pleasantville Road, Pleasantville, NY 10570 (914-769-51500) With 84196 miles on [XXX], 2023. The complain was “Roof is leaking water from sunroof on the floor on the passenger side and then makes its way to the real passenger” They cleaned the clogged drained -$145. Only to return in mid-February with a flooded on the same left side. With no diagnosis how to fixed - my had a car not driveable in in the rain 😂 I am forced to get a new car - and to insult to injury the dealer is only offering $3,500 as a trade in INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 27, 2023 · Airbags, Brakes · NY · crash

I made a report on 11/1/19 about issues with my vehicle due to a manufactures defect that the panoramic roof drains did not drain properly and water leaked throughout the vehicle. Please refer to ODI# 41277589 and Ref.# 238025. This is a known issue with these vehicles and should have been recalled by volkswagon. On September 18, 2023 my daughter got into an accident because the vehicle shut off and couldn't stop. Air bags never went off either. It has officially been determined that there was in fact an electrical short.

Filed Aug 17, 2023 · Body · SC

There is an excessive amount of water leaking into the passenger compartment and also the cargo area The result is that considerable mold growing on the carpeting of the entire car The dealer has ordered repair parts but the parts are on back order leaving me to drive the vehicle while it has mold I have been advised if I remove the molded carpeting I will invalidate the warranty Very dangerous as occupying this vehicle results in inhaling mold

Filed Aug 16, 2023 · IL

The manufactured rear camera and lock. Have been having water leaking in do to improper placing of lock and camera. It has stop working.

Filed Aug 12, 2023 · VA

I purchased a 2019 Tiguan as a low milage Certified Pre-Owned vehicle. In less than a year, it's been in the dealership for weeks due to an unidentified water leak. Apparently, VW's panoramic sunroof is prone to leaking. The first time I brought it in, they could not find a leak but there was obviously mold all over the rear passenger floorboard. They charged me roughly $500 to clean the drains and sent me on my way. A couple months later, the leak and mold showed up again, so I brought it back to the dealership. Without completely explaining the fix plan moving forward, they completely disassembled the interior everything from the seats, headliner and trim panels all the way to the metal! Still unable to duplicate the leak, they hired a leak specialist, and still could not find a leak. They finally called me and tried to charge me to reassemble the vehicle. As a young military family, all I value is a safe reliable vehicle, and this vehicle has been nothing but a nightmare. If there is any way you can point me in the right direction to move forward on this known issue, I would greatly appreciate it. Thank you again for your time. Aaron

Filed Apr 2, 2023 · GA

There is mold growing in my vehicle due to there being a sealant issue with my panoramic moon/sun roof, causing a water leak into the vehicle. The moon roof is fully functioning, but a VW dealer has told me that this is a known issue for my model and year, and he recommends trading it in because even if I spend the $6K+ it would take to replace it - there is no guarantee it won’t occur again. I have been inhaling the moldy air in my vehicle and this is 1000% a safety hazard!