Genesis G70 stalling problems

Filed Sep 21, 2026 · Engine · GA

My 2023 Genesis G70 has recurrent, intermittent engine power loss and stalling while driving, including on highways. The check engine light comes on intermittently and the engine can run roughly. After a stall, restarting can restore operation, but the issue recurs. Unexpected power loss in highway traffic puts occupants and other road users at risk. The exact failed component is UNKNOWN. The vehicle had repeated prior visits to Genesis of Auburn without resolving the concern. Southtowne Hyundai and Genesis of Newnan held it from August 19 to September 4, 2026. Repair order 184931 documents the stalling complaint and reports of misfires on cylinders 2, 4 and 6. It records multiple test drives, inability to duplicate the concern, and no stored or active diagnostic trouble codes at that visit. The vehicle was returned without a repair for this concern. On September 9, 2026, five days after pickup, the same stalling/loss of power recurred. The Genesis diagnostic system reported P0300, P0302, P0304 and P0306 at 67,847 miles immediately afterward. I sent Genesis Consumer Affairs videos and the diagnostic information that day. On September 16 I requested another appointment and a loaner because of the continuing highway stalling. After a September 21 follow-up, the dealer offered late October diagnostics with no rental. Genesis later offered an expedited September 23 appointment; I requested September 24 because of a transportation constraint. The condition remains unresolved as of this report. I request review of this recurring safety concern. Service records, diagnostic screenshots and videos are available. The vehicle can be made available for inspection by arrangement. Precise driving speed and the first occurrence date are UNKNOWN.

Filed Sep 10, 2026 · Fuel system · 35,000 miles · MD

The contact owns a 2019 Genesis G70. The contact stated that the vehicle was experiencing starting issues. Additionally, while driving 15-20 MPH and coming to a stop, the vehicle stalled and lost motive power. The vehicle was turned off and restarted and was able to drive to the intended destination. The contact stated that the failure recurred and progressively worsened. While researching the failure online, the contact discovered that the failure was a common issue. The vehicle was initially taken to the dealer, where an unknown software update was performed, and the check engine warning light illuminated during the failure. The vehicle was taken back to the dealer, where it was diagnosed and determined that the fuel pump had failed and needed to be replaced; however, it was determined that the failure was not covered under warranty because a specific DTC indicating that the fuel mixture was too rich was not retrieved. The manufacturer, Genesis, was notified of the failure by phone, filed a case, and scheduled a service appointment with a dealer for the contact. The failure mileage was approximately 35,000.

Filed Aug 22, 2026 · Engine, Fuel system · TX

I own a 2019 Genesis G70 3.3T Twin-Turbo V6, VIN [XXX], with approximately 122,000 miles. Twice within approximately two weeks, the vehicle has suddenly and unexpectedly experienced a near-total loss of propulsion while being driven. Without warning, the engine begins shaking and sputtering severely, the Check Engine Light illuminates, and the vehicle provides almost no usable acceleration. The engine does not completely stall but operates barely above a stalled condition. After safely stopping, turning the vehicle off, and restarting it, normal engine operation and full power immediately return and the Check Engine Light extinguishes. The vehicle may then operate normally for days before the condition occurs again without warning. This creates a serious safety hazard because the failure could occur while traveling at highway speeds, merging, changing lanes, or crossing traffic. A sudden near-total loss of propulsion under those circumstances could result in a serious or fatal collision. I have found reports from other Genesis G70 owners describing substantially similar intermittent loss-of-power conditions that temporarily resolve after an ignition restart. Genesis has also issued safety recalls involving G70 powertrain-related conditions, including the federal safety agency Campaigns 24V‑528 and 24V‑191. I have formally notified Genesis Motor America in writing and requested immediate investigation and repair. I am submitting this complaint so the federal safety agency has an independent record of this recurring and potentially dangerous loss-of-propulsion condition and can determine whether it represents a broader safety defect affecting Genesis G70 vehicles. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Feb 24, 2026 · Engine · OH

2021 Genesis G70 engine shutting off at stops, often linked to the Idle Stop and Go (ISG) system or, in some cases, unexpected stalls. Possibly the automatic transmission's calibration leading to rough stops, or needing to restart the car if the ISG fails to restart the engine upon releasing the brake. 2.24.26:The vehicle stopped running and would not restart a busy intersection which involves my safety and other drivers. This has happened a couple times and I have replaced the fob batteries several times just in case that was the problem. It has not been inspected because it was just involved in another incident yesterday and I have been only making it to work as I am afraid to drive it. The warning came up on the dash after the car shut off. The vehicle can be picked up and inspected at any time. I do not have another vehicle or rental option.

Filed Feb 12, 2026 · Fuel system · FL

My vehicle is covered under Safety Recall 023G involving an ECU update, inspection for DTC P0088, and high-pressure fuel pump replacement if inspection criteria are met. The recall is listed as completed, however the high-pressure fuel pump was not replaced, and the dealer has refused replacement. Only an ECU update was performed. I continue to experience fuel pressure–related symptoms consistent with the recall condition. The dealer has declined further action and has not provided documentation showing inspection results or justification for non-replacement. I believe the recall was improperly completed, creating a safety risk due to potential loss of engine power or stalling. I am requesting the federal safety agency review.

Filed Feb 6, 2026 · Engine, Fuel system · TX

The fuel delivery system, specifically the fuel pump and fuel rail pressure system, has malfunctioned and continues to trigger diagnostic trouble code P0191 (fuel rail pressure sensor range/performance), despite a prior recall-related software update performed by the dealer, and the vehicle and all affected components are available for inspection upon request. While driving on the highway, the vehicle suddenly began stalling, hesitating, and hard jerking before losing power and entering limp mode, limiting speed to under 50 mph and forcing me to immediately pull over, which created a serious safety risk to myself and other drivers due to the sudden inability to maintain highway speeds. The issue has been confirmed by an authorized dealer through repeated diagnostic scans showing the same fuel system fault codes, and the dealer has determined the fuel pump now requires replacement, indicating the recall update did not resolve the underlying failure. The vehicle has been inspected by the dealer on behalf of the manufacturer, and prior to the failure the check engine light illuminated and has remained on since, with symptoms escalating abruptly and occurring without warning, making this an ongoing and unpredictable safety issue.

Filed Dec 14, 2025 · Acceleration, Engine · MD

I experience a lack of power issue when driving the vehicle and attempting to accelerate past 40-60 mph. I will floor the accelerator and the car still stalls and will not accelerate. This has been terrifying when merging onto the highway and realizing this issue is occurring, as it is sporadic and not noticeable on residential/low speed drives. In the videos I've taken, you can see the engine RPM increase to approximately 4k RPM; the gear indicator continues to show "D," indicating the RPM increase was due to a throttle-induced downshift as opposed to shifting with the paddles; and the vehicle speed fails to increase as would be expected at the necessary throttle application for the RPM to be at that level. I have taken my vehicle to to the genesis service dealership at least 5 times for this issue and it is still a recurring issue. Many genesis owners complain about this issue on forums with no resolution from Genesis.

Filed Sep 19, 2025 · Fuel system · MD

Vehicle: 2022 Genesis G70 Mileage at failure: ~46,000 miles Description of problem: While driving, my vehicle suddenly lost power and became unable to accelerate properly. I was nearly struck by a truck because the car lost all motive power in traffic without warning. This is extremely dangerous and could have caused a serious accident. The vehicle had already received the fuel pump recall repair in December 2024 Despite this, in September 2025 the vehicle required replacement of the fuel injectors under warranty due to failure. Safety concern: A car with only ~46,000 miles should not experience fuel system failures of this magnitude. Having both a recall repair and injector failure at such low mileage raises concerns about widespread defects in the Genesis G70 fuel system. Action requested: I am requesting the federal safety agency to investigate repeated fuel system failures (fuel pump and injectors) in 2022 Genesis G70 vehicles. These failures create a significant risk of crashes due to sudden stalling or loss of power.

Filed Jan 25, 2025 · Engine, Fuel system · OH

5 times in the last 3 months the vehicle stalled while coming to a stop to put in park once, and 4 other times when the vehicle was off and parked, then started. The vehicle immediately began to stall out sounding as if it wasn't getting enough fuel. The last 2 times it stalled when being started, the vehicle remained on once I gave it a little gas by pressing the gas pedal when the stall started. The dealership is aware and performed a software update stating no components needed replaced and to keep an eye on it and a record of when it happens. Although it's believed to be an issue with the fuel pump, this specific one is not listed under the fuel pump recall.

Filed Nov 5, 2024 · Electrical, Engine · NJ

When driving the vehicle it feels as though as it stalls due to choking all or some of the fuel getting to the engine. This is most prone when accelerating fast. It feels as though the fuel is shut off or severely diminished as the vehicle will accelerate, but at a fraction (crawl) of the normal output available and accomplished in the past.