Volkswagen Passat loss of power problems

Filed Oct 28, 2026 · Electrical, Engine · VA

Since purchase in XXX, the vehicle has intermittently illuminated the EPC warning light at startup, at which point the engine will not accelerate (reduced power/limp mode). Cycling the ignition usually clears it. Beginning in XXX, a second symptom appeared: while stopped at idle (traffic lights, stop signs), the battery warning light illuminates and the engine stalls, requiring a restart in traffic. This has occurred approximately 8 times in XXX, most recently on Saturday, XXX when it happened twice. Wet or rainy conditions appear to make it worse. Stalling in traffic results in loss of power steering and brake assist and is a safety hazard. The vehicle has been to Volkswagen dealers six times for this complaint with no lasting repair: a wiring harness repair at Freehold VW (XXX); a boost pressure sensor diagnosis (XXX); an overlay harness, ECM-related repairs, and ECM software update under emissions recall 23EO (XXX); boost pressure sensor replacement (XXX); airflow meter replacement and harness repair (XXX); and re-pinning of loose connections at the ECM connector for the G31 boost pressure sensor (XXX), all at World VW in [XXX]. Fault code P0236 (turbocharger boost sensor circuit) has been recorded on every visit; P2261 was also recorded. The check engine light, EPC light, and stalling have all returned since the XXX repair. Current mileage is approximately 27,800. Repair orders are available on request. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Feb 9, 2026 · Acceleration, Fuel system · PA

While driving on the highway my car suddenly began to stall. It lost power later after that & when I got an oil change then tried to drive it later I was stopped by another driver told something is leaking. While driving to a Autozone I noticed the gears jump while shifting from 1 to 2 and I now can’t past 20 mph. I’ve already gotten the camshaft replaced and while researching I learned my cars make and model is being recalled for everything my car is going through. The vin says it’s not eligible for any recalls. Its maintenance is unkept.

Filed Feb 5, 2026 · Engine, Fuel system · DC

The contact owns a 2015 Volkswagen Passat. The contact stated that while driving at various speeds, the vehicle sputtered intermittently. The vehicle was taken to the dealer, who diagnosed the vehicle and determined that fuel was leaking into the engine compartment, causing engine failure. The contact stated that the dealer had repaired the vehicle and possibly cleaned the engine. The dealer had informed the contact that the engine would last 4-6 months before complete engine failure. The vehicle was returned to the contact; however, while driving approximately 35 MPH, the vehicle sputtered and then lost power. The vehicle was restarted after several attempts to continue driving. The vehicle was returned to the dealer but was not repaired. The dealer suggested that a new vehicle be purchased. The contact searched online and became aware of the federal safety agency Campaign Number: 15V028000 (Fuel System, Gasoline); however, the VIN was not included. The manufacturer was made aware of the failure and confirmed that the VIN was not included in the recall. The failure mileage was unknown.

Filed Jan 26, 2026 · Engine, Transmission · IL

I am reporting a recurring engine defect in a 2014 Volkswagen Passat that has resulted in repeated engine failure and loss of power while driving. Approximately six months after purchase, the vehicle required a complete engine replacement. One to two years after the replacement, the vehicle began exhibiting the same engine-related failures and has since become inoperable again. Manufacturer-issued Technical Service Bulletins addressing these engine defects were issued prior to the sale of the vehicle, indicating the condition was known. The repeated engine failures create unsafe driving conditions, including the risk of sudden loss of power during vehicle operation.

Filed Jul 7, 2025 · Electrical, Engine · PA

2015 Passat TDI sudden complete power loss while driving, including highway incidents. Vehicle stalls with no warning, creating immediate safety hazard. Symptoms match documented crankshaft position sensor failures in identical vehicles that VW has repaired under warranty for other owners. VW Customer Care closed case requiring 'duplication' of safety defect before repair. Request immediate safety investigation. I am reporting today's incident however this issue has been occuring since May 1st and occurred on numerous occasions with today being the most unsafe.

Filed Mar 17, 2025 · Acceleration, Engine · TN

I was on top of Beech Mountain NC working at a customer's house when it started to snow. I was at the bottom of their driveway and when I attempted to drive out, the traction control light would turn on, indicating I was losing traction. When this happened, I was unable to accelerate any more and the car started sliding backwards. So sitting in the car in the snow, I pulled up YouTube to figure out the "procedure" to disable traction control so I could get more speed. Turn the car off, ignition on, activate the flashers, push the brake pedal multiple times, then start the car. Traction control disabled, so "simple"! The only problem is once the car starts moving traction control gets enabled again and I'm sliding backwards again! Extremely dangerous on a mountain! Eventually I was able to clear the snow enough and just hold down the accelerator to power out. So now my GPS is telling me I have to drive up a hill to get off the mountain. Same problem: I start up the hill, traction control kicks on and I lose ALL power and begin to slide backwards! Luckily I am a good driver because I was able to control the slide and do a 180 in the middle of the road. So my GPS tries to reroute me and sends me up a different hill! Same exact result! I eventually had to just ignore my GPS entirely and just manually look for a road that was heading down hill. I thought for sure I was either going to wreck because of the traction control or be stuck up there in a snow storm! Not having the option to disable traction control and leave it off so that I could get uphill us very unsafe! The worst part is I didn't even realize my car didn't have the option to disable traction control until I was already stuck! If I'd known that, I would have taken my truck.

Filed Dec 17, 2024 · Engine · MS

Unknown. I was driving down the interstate and car just lost power and wouldn’t get no gas. Got it to the side of the road and it wouldn’t crank back up. Took it to shop and the mechanic stated motor need to be replaced.

Filed Jul 6, 2024 · Fuel system · WA

On [XXX] at 6 a.m. I was commuting NB on [XXX] , when engine lost power on 5 lane highway after driving over rough patch of road (~1 mile S of [XXX]). I barely got car onto right shoulder from middle lane when car shut off. Glow plug pigtails warning light came on right as I experienced significant decrease in engine power. AAA towed car to VW Dealer. Diagnostic performed on 7/5. I was informed of catastrophic failure of fuel pump, metal had gotten into fuel lines and tore up. My entire fuel system needs to be replaced. Dealer quoted $7K to repair. Car had never displayed signs of fuel issues. Car is well maintained and gets regular service at dealer. Upon investigation, I see VW had several years with high pressure fuel pumps failing. This needs to investigated/addressed as these failures are still occurring in cars that are 2013 and newer. I have requested dealer to send me pdf of repair estimate. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Sep 20, 2023 · Acceleration, Engine · TX

First/only owner of a 2018 VW Passat GP r-line, scheduled maintenance intervals followed religiously and performed by VW; only filled with top tier fuel (mid/premium), no prev. indicator lights ever illuminated until ECM light (no accompanying warning lights) came on while driving at highway speed with Adaptive Cruise Control engaged. Immediate loss of power and shaking vibration upon any attempt to accelerate/change lanes to safely get off of roadway. Once off roadway, all systems shut down and engine turned off for several minutes. Restarted car w/o difficulty, remained parked for 5 more minutes to monitor ECM light which did not return after shut down/restart. Returned to highway while safely merging into lane with conservative acceleration. ECM warning light did not return and vibration/shutterring had ceased. No unusual or abnormal gas mileage readings found upon close monitoring. Vehicle was driven x3 (relatively short distances) with speeds no greater than 65 mph; no return of ECM or any other warning lights. On the 4th drive, while attempting to evade an idiot, accelerator was applied more aggressively so as to avoid a near-catastrophic collision (nowhere to slow down or go to shoulder safely within 0.75/sec) which triggered the ECM light accompanied with loss of power/shuttering/vibration when pressure applied to accelerator. Pulled over, shut down, waited, panicked a little, then restarted engine. ECM light did not reappear after shut down/restart. Vehicle operated flawlessly once more. Injector/fuel system cleaner added to fuel tank and driven 40 mins in Sport mode to burn corrosive buildup effectively. Fuel tank refilled at new fueling station (thinking bad gas was a differential) and no issues since. Codes not showing up when diagnostics are ran. VW won’t fix something that isn’t presenting itself as a problem, at that very moment. 93k miles w/ NO prev. engine/emissions/transmission probs.

Filed Sep 18, 2023 · Engine, Fuel system · CA

After having the government approved and MANDATED Phase 1 and 2 Dieselgate fixes performed on my VW Passat TDI it has randomly lost power and or stalled while at highway speeds at least 6 times. The last time my 16 year old son was left stranded in the middle of a busy four lane highway narrowly avoiding being hit and seriously injured and/or killed. Apparently there are thousands of these cases (a class action lawsuit filed in 2018) on the road. Why haven't I been notified? This mandatory fix is much more dangerous then the original issue it seeks to address. From what I understand, the fix is causing the DPF regeneration sequence to occur much more often and much hotter, thereby cooking/melting/boiling the entire cooling system and shutting the engine down without warning. My vehicle has been in the service dept of VW for over 6 months (this last time) because they cannot figure how to fix it permanently. VW Corporate is very aware of the situation and has fed me a bunch of [XXXX] not even a child would believe and has refused my suggestion to self report the problems to NTHSA and CARB. If the cars are not taken off the road this issue will definitely (if not already) result in major injuries and likely death. I have done my duty notifying this government agency and now if a tragedy occurs there will have been actual notice as required by the law. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)