2021 Volkswagen Atlas engine problems

“Purchased my vehicle from a known dealership of Volkswagen, I’ve had the vehicle for 6 months and within the first three months my SOS system stopped working. I went to have it diagnosed and they stated that there is a back order on the module for the replacement. Now I’m experiencing a sweet smell coming from the vents, sometimes heat is interment and the windows have a film on them.”

“Malfunctioning Component/System: The vehicle is experiencing two separate, severe safety malfunctions: Issue 1 (Engine Stalling): The engine completely shuts off while the vehicle is actively in "Drive." Issue 2 (Unintended Lockout): The vehicle automatically locks all doors with the keys inside, even when the engine is off and doors are being actively used. Safety Risk to Others: Issue 1: The sudden engine shutoffs occur while waiting at stoplights, stop signs, or in moving school student drop-off zones. This creates an immediate risk of a rear-end collision or being stranded in active traffic. Issue 2: This defect creates a critical life-safety hazard for children. While the car was parked and turned off, I placed my purse (containing the keys) on the passenger side and buckled my children into their car seats. Upon closing the rear door, the vehicle instantly locked itself, trapping my young children inside a completely turned-off, locked vehicle while leaving me stranded outside. This presents a severe risk of child entrapment, extreme cabin heat, or delayed rescue in an emergency. 3. Dealer Confirmation & Reproduction: Because both issues occur…”

“The engine stalls randomly while in motion. When this happens, an error gets presented on the dashboard asking the driver to restart it manually. This has occurred when driving forward and backing up. This car was purchased at CarMax and serviced through the extended warranty. However, a few weeks later the problem started happening again.”

“On multiple occasions at startup, vehicle made unusual sounds then either stalled shortly after starting or simply wouldn’t start. Vehicle has also stalled multiple times at red lights and stop signs. On these occasions nearly the entire dashboard lit up simultaneously with warning lights across many unrelated systems (“Christmas tree” effect), not a single isolated fault, often while on interstate at 70mph. Recurring, not one-time. 1.ELECTRICAL/ABS: Aug 2025, right front ABS wheel speed sensor replaced after dash lights loss + reported dying after startup; dealer couldn’t duplicate stalling. As of Aug 2026, scan shows left front ABS sensor faulting (open/short to ground, implausible signal) plus parking brake module fault referencing wheel speed sensor implausibility. Dealer also flagged left rear ABS sensor as Critical. Numerous low-voltage faults present across modules simultaneously (supply voltage too low, data bus implausible, control module input power low), matching dashboard cascade events. Battery replaced May 2024 after failing load test. 2.ENGINE: Dec 2024, cylinder 6 injector replaced (complete goodwill, dealer+VW corporate) for CEL/air-fuel…”

“2021 Volkswagen Atlas, VIN [XXX], approximately 116,000 miles. Vehicle developed a cylinder failure requiring full cylinder replacement. Following replacement, compression remains abnormally low, specifically on cylinders #4 and #6 (approximately 90 PSI). Mechanic diagnosed significant carbon buildup on the piston rings as the cause of the persistent low compression, and confirmed this diagnosis via a wet compression test, in which compression increased when oil was introduced directly into the affected cylinders — indicating worn/compromised piston ring sealing rather than a valve or head gasket issue. Check engine light continues to trigger intermittently. This appears consistent with a known EA888 2.0T piston ring/carbon buildup defect currently the subject of active class action litigation (XXX) against Volkswagen Group of America. Vehicle has also experienced a separate prior failure of the high- and low-pressure fuel pumps and control module (repaired XXX at 77,921 miles, Volkswagen of North Nashville). Concerned about ongoing engine performance and reliability, and potential for further damage if underlying cause is not fully resolved.”

“I was driving on a busy road and my car turned off. I had to turn on my hazards and hope no one hit me at 60 mph. I got an EPC error on the dashboard and when diagnosed it was a failure with the Fuel Pump Control Module. This is massively unsafe for myself and my family. I cannot drive a car that can randomly turn off. According to online forums this is a very common VW issue and needs to be looked into”