2021 Ford Explorer: hesitation when accelerating

Filed Sep 1, 2026 · Acceleration, Engine · CA

I am reporting ongoing safety-related powertrain and drivability concerns involving my 2021 Ford Explorer ST in Fresno, California. The vehicle has experienced recurring transmission and driveline problems, including harsh or delayed shifting, hesitation, abrupt gear engagement, jerking/surging, and inconsistent acceleration. These symptoms are similar to transmission concerns documented by Ford for 2021 Explorers equipped with the 10R60 automatic transmission, including harsh/delayed engagement or shifting and potential issues involving transmission controls, solenoid strategy, and main-control valves. The vehicle has also required CV axle/half-shaft repairs, raising additional concerns regarding driveline reliability. I am also concerned about the known rear differential/rear axle mounting-bolt defect affecting 2021 Explorers. Ford has documented that the rear axle mounting bolt may fracture, allowing the axle housing to move. This can result in severe vibration/noise and possible driveshaft or half-shaft disconnection, potentially causing loss of propulsion. The defect may also contribute to a vehicle rollaway hazard. These combined transmission, CV axle, and rear differential concerns create a significant safety risk. Delayed acceleration or engagement can prevent the vehicle from responding as expected when entering intersections, making left turns, merging onto highways, changing lanes, or avoiding hazards. Abrupt engagement after hesitation can cause unexpected vehicle movement. Failure of a CV axle, half-shaft, or rear axle/differential mounting component could cause sudden loss of propulsion or vehicle control. I am requesting that the federal safety agency investigate whether these recurring transmission and driveline problems represent a broader safety defect involving the 10R60 transmission, CV axles/half-shafts, rear differential mounting system, or related powertrain components.

Filed Aug 15, 2026 · Engine, Fuel system · MO

There was no accident, but very close a few times.when I am stopped at a stop sign or light when I press down on the gas pedal the car hesitates I have to pump the pedal to get the car moving or it would stall in traffic. No check engine light is or has been on. I’ve been to 2 different ford dealerships and after there inspection they claim nothing wrong with my car. It’s already cost me a lot if money. When driving I can feel the car surge likes it’s not getting fuel sufficiently real bad at traveling at or below 50 mph. I’m afraid it will stall and get us t- boned but the mechanics say nothing wrong I disagree there is something wrong. I know another person who had the same problem and he got rid of the car, I can’t afford to do that, please do something to get a recall or something before we’re seriously injured or worse.this started about a year ago and getting worse.

Filed Jul 14, 2026 · Brakes, Driver assistance · MI

I am reporting a safety concern involving a delayed transmission gear engagement and delayed rearview camera activation. Intermittently, when shifting the vehicle from Park into Reverse or Drive, there is a noticeable delay before the transmission actually engages the selected gear. During this delay, the rearview camera also fails to activate immediately. Because there is no immediate indication that the requested gear has engaged, I have experienced situations where I believed the vehicle was in Reverse or Drive, but it remained in the previous state for several seconds. In some instances, the transmission engages unexpectedly after the delay, causing the vehicle to move in a direction different from what I anticipated. For example, after selecting Reverse, the vehicle may hesitate before moving, or after changing between Reverse and Drive, the delayed engagement can result in the vehicle moving in the previously engaged direction before finally shifting into the selected gear. This creates a significant safety hazard, particularly when parking, backing out of driveways, or maneuvering in areas with pedestrians or other vehicles. The delayed rearview camera activation further increases the risk because it prevents the driver from immediately seeing behind the vehicle while attempting to reverse. The issue occurs intermittently and without warning, making it difficult to predict. I am concerned that this condition could lead to a crash, property damage, or injury if the vehicle moves unexpectedly due to the delayed gear engagement. I request that the federal safety agency investigate this issue to determine whether it is related to a transmission, electronic shift control, or software defect affecting the safe operation of the vehicle.

Filed Jul 15, 2025 · Fuel system · 55,000 miles · PA

The contact owns a 2021 Ford Explorer. The contact stated that while depressing the accelerator pedal, the vehicle hesitated while accelerating and decelerated unintendedly. The contact stated that the failure mostly occurred during the warmer weather months. The cause of the failure was not determined. The manufacturer and local dealer were notified of the failure, but no assistance was offered. The contact was informed that the VIN was not included in the federal safety agency Campaign Number: 25V455000 (FUEL SYSTEM, GASOLINE). The contact stated that the vehicle had experienced the failure listed in the recall. The failure mileage was 55,000.

Filed Jul 24, 2024 · Transmission · 46,000 miles · CO

The contact owns a 2021 Ford Explorer. The contact stated that the vehicle was hard to shift and there was a delay while shifting from first gear. The vehicle hesitated while shifting. While at a stop, the vehicle hesitated and was slow to shift into gear. There were no warning lights illuminated. The vehicle was taken to the local dealer, where it was diagnosed, and the turbo charger was reset. The vehicle was repaired, but the failure recurred. The manufacturer was contacted, and informed the contact that there was no warranty coverage on the vehicle. There was no assistance provided. The approximate failure mileage was 46,000.

Filed Mar 4, 2023 · Transmission · TN

The transmission hesitates for several seconds and shifts hard when being shifted into reverse. The dealership has made one repair attempt already.

Filed Oct 24, 2022 · Engine · TX

When driving at lower speeds, typically under 30 MPH, the vehicle jerks & lurches. Also sometimes lurches, hesitates or doesn’t react on rapid acceleration such as highway merging or passing. Have had many near-misses. Parking, Reverse & Drive do not always engage immediately upon shifting. I nearly ran over my husband when the car was supposed to be in park and it was still in drive. Car will become extremely hot after extended driving causing the A/C to automatically turn to hot air in order to cool the engine. It smells bad and is not at all comfortable on long summer road trips.

Filed Mar 2, 2022 · Transmission · 11,100 miles · MS

The contact owns a 2021 Ford Explorer. The contact stated while driving at 50 MPH, the vehicle started to hesitate as if the transmission was slipping. There were no warning lights illuminated. The contact drove the vehicle to an unknown dealer where it was diagnosed that no issues were found. The manufacturer was notified of the failure. The failure mileage was approximately 11,100.