Volkswagen Jetta loss of power problems

Filed Sep 26, 2026 · Electrical · TX

Im reporting a safety concern involving my car, while driving on 30 highway at 65 mph the vehicle suddenly lost throttle response and would not accelerate when I pressed the accelerator pedal, this created a potentially dangerous situation because I was traveling with surrounding 3 pm traffic and could have been involved in a collision do to the unexpected loss of power. I was force to pull over and after searching inf I turn off the car for 10 minutes and restarting the vehicle it appeared to operate normally again.However the failure occurred without warning, and I’m concerned that it could happen again while driving. I towed the car to the closest dealership but they can look at it until Thursday 10/01/2026 5 days after the accident.the vehicle recently received a software update and I don’t know whether the issue may be related because it happens days after. The incident represents a significant safety risk because a sudden loss of acceleration on highway can place driver as other motorists in danger.

Filed Sep 10, 2026 · Electrical · SC

On 2 separate occasions (in recent 2 months); the car would not restart and error messages would include printing the electrical parking brake engagement. Attempts to reset were futile. Car had to be towed. After 2nd incident, the VW dealership identified that the ground wire for the electrical harness that runs through fuse box and engine was severely overheated resulting in inability to start. There are no recalls on this item; from a safety standpoint, this could happen while driving and a loss of power could result with overheated ground wire condition. This is a potential very unsafe condition and a costly repair item. In comparison, the non-start stop button vehicles have experienced the same condition, and recalls were performed on 2018-2021 Jetta’s. The same exact case, severely overheated ground wires requiring complete replacement of main wiring harness.

Filed Jun 17, 2026 · Fuel system · UT

EPC light comes on and vehicle starts losing power while driving, you lose all acceleration. Check engine light has also illuminated I have taken in to have repairs done on this same issue 4 times in a span of owing this car for 7 months, this vehicle has become unreliable and a safety hazard while driving. They have replaced battery replaced ignition coils replaced EVAP valve reset my computer software updated my computers. I have spent a ton of money on this car for a repair that is unrepairable. And it currently sits in the VW dealership shop again because it is become a safety hazard to drive with myself let alone putting my child's life at risk driving on highways.

Filed Jun 8, 2026 · Electrical, Engine · TX

The vehicle is a 2019 Volkswagen Jetta (VIN [XXX]). The primary malfunction appears to involve the vehicle's electrical and starting system. The vehicle intermittently displays a "Starter System Faulty" warning message and has shut off unexpectedly while driving, particularly during periods of hot weather. The exact failed component has not been definitively identified, but the symptoms are consistent with an ignition switch or electrical system defect. The vehicle is available for inspection upon request. This defect creates a serious safety risk because the vehicle can lose power and stall while in motion. The unexpected shutdown places the driver, passengers, and surrounding motorists at risk of a crash, especially when driving at higher speeds or in traffic. The problem has occurred multiple times and has persisted despite repair attempts. More than $1,000 has been spent on repairs related to this issue, but the problem has not been resolved. The vehicle has been inspected and repaired by service technicians; however, the underlying cause has not been successfully corrected. The vehicle has not been involved in a crash as a result of the defect, but the recurring stalling and loss of power present an ongoing safety concern. Volkswagen has been contacted regarding the issue, but assistance has not resolved the problem. Prior to the vehicle shutting off, warning messages including "Starter System Faulty" appeared on the dashboard. The issue is more likely to occur during hot weather conditions. These warning messages began appearing before the stalling events and continue to occur despite repair efforts. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 2, 2026 · Fuel system · FL

Driving vehicle on highway, vehicle lost engine power, no acceleration possible. Attempt to restart vehicle resulted in no start. Subsequent evaluation of fault revealed high pressure fuel pump failure.

Filed Mar 28, 2026 · Electrical, Engine · MI

While driving, the vehicle suddenly shut off without warning. The engine lost power and multiple dashboard warning lights illuminated. The vehicle then displayed a malfunction related to the transmission, with the park (“P”) indicator blinking, and the vehicle would not shift out of park. The failure appears to be related to an electrical or ignition system issue, possibly the ignition switch. This created a significant safety risk as the vehicle lost power while in motion, increasing the risk of a crash. Prior to the failure, the only warning observed was a check engine light. No other warning messages were present before the incident. The problem has been confirmed by an independent mechanic/contractor. The failed component is available for inspection upon request. This issue appears consistent with known ignition switch/electrical failures reported in similar vehicles

Filed Jan 18, 2026 · Engine, Transmission · AL

Car was great for first 100000 miles. Then it was not. While driving in heavy traffic on a three lane highway, car lost power, ability to accelerate and went into limp mode. EPC code went on. Very dangerous. Took it to several mechanics, VW dealerships, could find nothing wrong. Issue has happened over 100x since, but I am unable to afford another vehicle and pray over car continually to keep me and others on road safe. Few times car would suddenly shudder like engine was quitting. Canceled medical trip to city when this happened 50 miles from home. Have had to cancel work as well one day when this happened. Recently bought a FIXD sensor and it diagnosed issues with faulty gas cap and purge valve. Replaced both. That issue seems to have resolved. Car has been burning oil like crazy. Sometimes 1L after driving 150 miles. Fuel efficiency is terrible. Even running 91 grade fuel hasn't helped. In cold weather, around -30, sometimes driver door won't close. Literally have to drive with one hand holding steering wheel and one hand on door. Scary. Newest issue this week. While driving highway speed, low oil light flashed momentarily. Then speedometer and rpm gages quit. Then entire instrument cluster went black. Was almost at work, so prayed and got there safely. After work, instrument cluster worked, but car started and stalled immediately. Mechanic code reader pulls up nothing. My FIXD reader says it's a upstream oxygen sensor. Looking at youtube videos, the issue it describes sounds like this may have been what contributed to those EPC codes for last few years. Borrowing a vehicle from family - car is stranded at work. This is my first and likely last VW.

Filed Jan 15, 2026 · Engine, Transmission · TX

Vehicle Information •Make / Model / Year: 2015 Volkswagen Jetta 1.8T SE •VIN: [XXX] Recall Information (if known) •Camshaft recall: 23R1 (2016) •ECM software update: 24DR (2020) Description of Problem: My 2015 Volkswagen Jetta 1.8T SE experiences loss of power while driving, where the engine RPM increases but the vehicle does not accelerate properly, especially when driving uphill. This creates an unsafe driving condition. The vehicle previously received recall repairs for the camshaft (23R1) and ECM software (24DR). Despite these recall repairs being completed, the same symptoms persist, indicating the recall may not have fully resolved the defect. I reported this issue to Volkswagen Customer CARE under case number [XXX], but the concern remains unresolved. I am filing this complaint to document that this is an ongoing safety concern, post-recall, that has not been resolved by Volkswagen. I request the federal safety agency to review this unresolved post-recall safety issue and ensure Volkswagen investigates whether the original recall repairs fully corrected the defect. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 1, 2026 · Transmission · CO

According to the mechanic to whom we took the vehicle, there was a massive short in the mechatronics component of the transmission. The mechanic also informed us that there was no proactive action we could have taken prior to this incident to prevent its occurrence. The car and its components are still available for inspection. The short caused the vehicle to immediately lose power while being driven between 60 and 65 mph on an Interstate Highway, and the vehicle had to be pulled over immediately. No warnings were provided before the short occurred but the failure resulted in the generation of a warning message after the fact. The vehicle had been serviced recently, including a basic inspection of the vehicle's electronics and transmission. I am unaware of the problem having been reproduced by a dealer or independent service center, but having researched the issue I discovered that other owners of similar make, model, and year numbers have experienced similar issues. Neither the vehicle nor its components have been inspected by the manufacturer, police, or insurance representatives, though, as noted previously, we did have a mechanic inspect the vehicle and faulty transmission to determine the cost of fixing/replacing the transmission. Please see Declined Jobs on attached invoice from Aspen Auto Clinic.

Filed Jan 1, 2026 · TN

While I was driving on the highway, the EPC light came on and the car began to lose power. It went into "limp" mode and lost all oil. I had it diagnosed at VW Carlock North Nashville. They told me the "exhaust camshaft cover bolts backed themselves out causing oil to get into timing belt and make belt swell causing it to lose tension and sheer timing belt, must replace timing belt, timing belt tensioner, timing belt idle pulley, exhaust camshaft cover bolts." This is barely out of warranty and the car has 46,000 miles. Why would the camshaft cover bolts simply come out? This is extremely dangerous, and the cost to repair it will exceed $3000. I am beyond frustrated.