2020 Volkswagen Passat

2020 Volkswagen Passat SE 2.0L VIN: [XXX] Complaint Summary: I am reporting a persistent and unresolved fault involving the secondary air injection system (DTC P0491 – insufficient airflow) that has resulted in repeated, conflicting diagnoses across multiple repair facilities. This raises concerns about a potential systemic defect affecting this vehicle model. Detailed Description: The issue began prior to March 2025 while the vehicle was still under warranty. The vehicle displayed a Check Engine Light associated with diagnostic trouble code P0491 (secondary air injection system insufficient airflow). On April 3, 2025, a repair facility diagnosed the issue as a failed secondary air injection pump and replaced the component. However, the Check Engine Light returned within 24 hours with the exact same fault code, indicating that the repair did not resolve the issue. A second independent diagnostic evaluation was performed later in April 2025. This inspection confirmed that: The secondary air injection pump was functioning correctly Airflow through the system was present Electrical controls and PCM commands were operating properly The fault was attributed instead to a mechanically stuck secondary air injection combination valve Despite this revised diagnosis, the issue has remained unresolved. As of 2026, a dealership evaluation has now attributed the same fault condition to a potential failure within the cylinder head assembly, indicating a significantly more serious underlying condition. Safety Concern: This issue involves the emissions and engine air management system and has resulted in: Persistent Check Engine Light Repeated failure of emissions-related components Conflicting and escalating repair diagnoses across multiple qualified service providers I am requesting that the National Highway Traffic Safety Administration review this issue for potential investigation into a systemic defect. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Steering wheel controls stopped working, no horn either. Probably no airbag but haven't got into an accident. There was recall on the same part for the until 2018, but the new part I was going to install lists that if fits cars 2016-2022 Part # 5K0-953-569-BC Recall from VW. Number: VWP-18-11, Will replace part for my fiance,

Error message alerted to maintenance needed and the air bag light has turned on and remained on. Also said message that front assist inls unavailable.

Oil pressure sensor fails. Causing high oil pressure. Causing the valve cover to be destroyed and the oil pan to leak. Draining the car oil.

VIN: [XXX] Dealership: Vanguard Volkswagen 6900 Burnet Rd Austin, TX 78757 I bought 2020 Passat back in Aug 2020 with CarNet included. It was showing that CarNet will be installed later when available at no cost. So in 2021 they installed carnet and everything was working fine up until 2024. The light turned off and no connection to the car. I called CarNet and they told me that most likely an issue with HW module and suggested to take to the dealer to get reset/replaced. Went to the dealer few days ago. Left them a car for 3 days for diag. No fault codes. So dealer sent a ticket to the Volkswagen to see how to proceed. I got a call from dealership today that Volkswagen responded to them that 2020 Passat is no longer eligible for the CarNet. Excuse me? At the time of sale CarNet was included. It was working fine no issues. And now Volkswagen taking car feature away that it came with and I paid for.. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Bought car from dealer. Vw Manhattan. 42000miles. 8 months later at 53000 miles. Engine problems. Went to Vw service. Head gasket. Lemon car. Warranty till 50000 miles. Cost? 4800$ Worse car possible.

Our vehicle will not speed up after accelerating but you can hear the engine making noise like it’s trying to speed up. We have taken our vehicle 3-4 times back to the dealership and they have told us they found nothing.

Car wasn’t pulling up the road the epc light came on had to have my vehicle rolled to the next dealer which was 36 miles from where I was. I was traveling from grapevine tx and it start acting up in Huntsville tx. Came out of pocket 1085.00 and that was with a discount for the fuel injector #3 My warranty expired 3000 miles ago. I am the first owner on my vehicle.

My clock spring isn’t working after having my vehicle for barely a year. My air bag light is currently on. I can’t use my horn nor use any of the controls on my steering wheel. I’ve paid already 800 plus on previous car issues such as my harness hose. I’m still awaiting reimbursement. Further review and assistance needed.

The contact owns a 2020 Volkswagen Passat. The contact stated while driving at various speeds, the vehicle made abnormal sounds. The contact stated that the vehicle started independently, and the Driver Assist function engaged independently. Additionally, the contact stated that the vehicle was swerving unintendedly and would vibrate while driving. The vehicle was taken to the dealer several times; however, the dealer informed the contact that they could not duplicate the failure. The dealer later replaced the brake rotors; however, the failure persisted. The electronic power control (EPC), the Adaptive Cruise Control and low oil pressure warning lights were illuminated. Additionally, the message "Front Assist Error" was displayed. The vehicle was taken to the dealer, where it was diagnosed that the brake caliper was fractured. The vehicle was not repaired. The contact stated that the dealer had previously replaced the thermostat as the message "Coolant Error" was displayed on the instrument panel. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 7,000.

HELLO MY DOUGHTER HAD A ACCIDENT CAR WAS TOTAL LOSS AND AIR BAGS DID NOT POP UP AND SEAT BELT WAS NOT TIGHT ENOUGH

The Volkswagen Front Assist (sometimes referred to as Forward Collision Warning) system employed without having anything/anyone in front of the vehicle - no traffic in front, behind or on the side and the brakes engaged the brought the car to a complete stop in the street. This has been reported to Volkswagen and we have been told that their engineers are working on this issue but the vehicle is safe to drive. The day was a clear day. Date is approximate - I don't have my phone on me with the photo.

THE BREAKS IS VERY WEAK I WAS GOING TO HIT THE CAR AT THE FRONT OF ME WITH 1 INCH ! IT TOOK THE CAR LIKE 4 SECONDS TO STOP NOT SURE WAS IT JUST THE BREAKS OR THE BREAKS AND TIRES , THE CAR KEPT MOVING AFTER PRESSING THE BREAKS HARD ENOUGH , I WAS SHAKING SINCE I JUST GOT THE CAR 4 DAYS AGO !

I WAS DRIVING DOWN THE HIGHWAY SOUTH SHORE IN RANDOLPH MA STOUGHTON EXITS AND I HEARD A POP IN MY DRIVER SIDE REAR TIRE AND WHEN I PULLED OVER I CHECKED MY TIRE AND MY TIRE WAS COMPLETELY FLAT AND THERE WAS A HOLE APPROXIMATELY THE SIZE OF A HAND GUN BULLET HOLE IN MY RIM. I WAS GOING A LITTLE UNDER THE SPEED LIMIT DUE TO HAVING A 3 YEAR OLD IN THE VEHICLE IN THE FAR RIGHT SLOW LANE. THE FOLLOWING MORNING I WENT TO GET THE TIRE INSPECTED IT WAS CONFIRMED THERE WAS A HUGE PIECE OF GLASS IN MY TIRE.

PARK ASSIST NOT AVAILBLE. LOSS OF ENGINE POWER ON LEFT OR RIGHT TURN