Home · 2021 Ford Bronco Sport Early Release · Complaints

What 664 owners told NHTSA about the 2021 Ford Bronco Sport Early Release

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (664)Crash / fire / injury (32)Electrical system (203)Transmission & drivetrain (171)Engine (139)Brakes (124)Fuel system (106)Visibility & wipers (26)Engine & cooling (23)Suspension (21)Driver assistance (14)Steering (14)

23 of 664 complaints match · Engine & cooling · clear filters

Jun 9, 2026Engine & cooling

The contact owns a 2021 Ford Bronco Sport. The contact stated that while driving at an undisclosed speed on two separate occasions, the turbocharger became inoperable. The contact reported hearing a knocking sound coming from the engine at the time of the failures. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and advised the contact that the remedy was not available to complete the repair. The approximate failure mileage was 80,000.

NHTSA ODI 11742985

Mar 17, 2026Engine & cooling

The contact owns a 2021 Ford Bronco Sport. The vehicle was taken to Take 5 Oil Change for an oil change, and the contact was informed that the coolant reservoir was empty. The vehicle was taken to Ritchie Automotive, where it was diagnosed that the water pump had failed and needed to be replaced. The vehicle was not repaired. The dealer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The manufacturer was not contacted. The failure mileage was approximately 80,000.

NHTSA ODI 11725042

Feb 26, 2026Engine & coolingFuel systemElectrical systemFire

The contact owns a 2021 Ford Bronco Sport. The contact stated that while her husband was driving at 60 MPH and entering the base at 15 MPH, the overheating message was displayed. The driver pulled over, and the light turned off. After exiting the vehicle, he noticed the vehicle had caught fire. The driver disconnected the battery. There were no reported injuries. Another driver stopped with a fire extinguisher to assist with putting out the fire. The fire department was able to extinguish the fire. The vehicle was towed to the local dealer, but the vehicle was not diagnosed or repaired. The contact stated that the failure was related to NHTSA Campaign Number: 25V467000 (Fuel System, Gasoline). The manufacturer was contacted, who initially was sending an inspector but changed to viewing the photos. The failure mileage was approximately 80,000.

NHTSA ODI 11720708

Aug 11, 2025Engine & cooling

The contact owns a 2021 Ford Bronco Sport. The contact stated that while driving at 60 MPH, several unknown warnings lights illuminated, and the vehicle stopped independently. The local dealer was contacted. The vehicle was towed to the dealer to be diagnosed and it was determined that the water pump needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but offered no assistance. The contact was transferred to the NHTSA Hotline to report the failure. The approximate failure mileage was 75,000.

NHTSA ODI 11679790

Jul 7, 2025Engine & cooling

The contact owns a 2021 Ford Bronco Sport. The contact stated that while her daughter was driving at an undisclosed speed, the vehicle inadvertently lost motive power and was unable to accelerate above 30 MPH. The failure persisted; however, the contact was able to drive to the intended destination. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with turbo charger. The contact was informed that the turbo charger needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 70,000.

NHTSA ODI 11671668

Jun 4, 2025Engine & coolingTransmission & drivetrainEngine

The contact owns a 2021 Ford Bronco Sport. The contact stated that while operating the vehicle, the instrument panel malfunctioned, with the message "Pull Over and Restart the Engine" displayed. The battery was replaced, and failure was resolved. Additionally, the contact stated while driving at an undisclosed speed, the vehicle suddenly lost motive power and stalled. The vehicle was towed to the local dealer who diagnosed that the engine was faulty and needed to be replaced. The engine was replaced, and the vehicle was repaired. The contact stated that later while driving at various speeds, the vehicle started jerking while changing gear. The vehicle was towed to the local dealer who diagnosed that the transmission was faulty and needed to be replaced. The transmission was replaced, and the vehicle was repaired. The contact stated that the vehicle later experienced a failure while attempting to accelerate, with the check engine warning light illuminated. The vehicle was driven to the local dealer who diagnosed that the catalytic converter was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure. The failure mileage was 5,000. The VIN was unavailable.

NHTSA ODI 11664809

May 15, 2025Engine & cooling

The contact owns a 2021 Ford Bronco Sport. The contact stated while the vehicle was parked and occupied, while attempting to turn on the air condition or heating system, there was an abnormally strong fuel odor coming from the vents. The contact stated that a dealer was contacted. The vehicle was taken to Meineke Car Care Center where it was diagnosed and determined that the Oxygen sensor threads were stripped. The manufacturer was notified of the failure and informed the contact that the vehicle warranty had expired. The approximate failure mileage was 50,000.

NHTSA ODI 11661190

Apr 14, 2025Engine & coolingTransmission & drivetrain

The contact owns a 2021 Ford Bronco Sport. The contact stated that the check engine warning light was illuminated. The contact stated that the vehicle sputtered while accelerating or making a left or right turn. The vehicle was returned to the dealer, who diagnosed the vehicle with a failed high-pressure purge valve. The high-pressure purge valve was replaced. The contact stated that after the repair, the check engine warning light remained illuminated, and the vehicle seemed as if the vehicle was going to stall after refueling the vehicle. The vehicle was returned to the dealer, who diagnosed a failed high-pressure sensor for the fuel injector. The vehicle was repaired, but the check engine warning light remained illuminated. While driving approximately 5 MPH, the vehicle failed to accelerate as needed. The contact pulled over to the side of the road, where the vehicle was taken to the dealer, who diagnosed failures with the alternator and suspension. The contact had the vehicle towed to a certified mechanic who completed the repairs. The contact stated that the vehicle had not experienced the failures again; however, the check engine warning light remained illuminated. The vehicle was taken to another dealer, Medford Ford Inc, (186 NJ-70, Medford, NJ 08055); who determined that the coolant reservoir was empty. The coolant reservoir was refilled. The dealer also retrieved DTC: P3402. The check engine warning light remained illuminated. The vehicle was not repaired. The contact learned of a Customer Satisfaction Program however, the vehicle was not included. The manufacturer was informed of the failure and opened a case. The failure mileage was unknown.

NHTSA ODI 11654402

Apr 9, 2025Engine & coolingElectrical systemSpeed control

See attached document for complaint.

NHTSA ODI 11653738

Feb 11, 2025Engine & coolingElectrical system

The contact owns a 2021 Ford Bronco Sport. The contact received notifications of NHTSA Campaign Numbers: 24V267000 (ELECTRICAL SYSTEM, POWER TRAIN) and 25V019000 (ELECTRICAL SYSTEM). The contact stated that one day after several attempts, the vehicle failed start. The contact charged the battery and took it to the dealer, where it was determined that the battery had failed and needed to be replaced. The battery was replaced. The contact stated that on a separate occasion, while driving 40 MPH, there was an abnormal sound coming from the engine. An unknown message was displayed on the instrument panel. The vehicle was taken to the dealer where it was diagnosed and determined that the timing belt had fractured, and the alternator pulley failed and needed to be replaced. The vehicle was not repaired due to the cost. The vehicle was towed to the residence and had not been driven since the failure. The manufacturer was made aware of the failure. The failure mileage was approximately 52,000.

NHTSA ODI 11641949

Feb 3, 2025Engine & coolingElectrical system

The contact owns a 2021 Ford Bronco Sport. The contact stated while stopped at a traffic light, the vehicle lost electrical power and stalled. The contact stated that several unknown warning lights illuminated before the screen went black. The vehicle was towed to the dealer, where it was diagnosed and determined that the battery had failed. The contact was informed that the battery did not support the function of the vehicle and needed to be replaced. The battery was replaced. The contact stated that on another occasion, while driving at undisclosed speeds, the heating system failed. The contact stated that the passenger’s side vents were not blowing hot air. The vehicle was taken to the dealer, where it was diagnosed that the water pump and gaskets had failed and needed to be replaced. The vehicle was repaired. The failure mileage was approximately 43,000.

NHTSA ODI 11640501

Nov 25, 2024Engine & coolingTransmission & drivetrainElectrical system

The contact owns a 2021 Ford Bronco Sport. The contact stated that while her son was at a stopped at a traffic light, the vehicle shut off without warning, and started to roll backwards. The contact's son applied the parking brake and later restarted the vehicle. The contact stated that upon restarting the vehicle, several warning lights illuminated. The vehicle was taken to the dealer and the contact was informed that the battery was drained. The vehicle was repaired under NHTSA Campaign Number: 24V267000 (ELECTRICAL SYSTEM, POWER TRAIN); however, the contact expressed concern that the same failure might return. The contact also stated that while driving at various speeds, an audible warning chime was coming from the vehicle with the temperature gauge was hot(H). The vehicle was taken to an independent mechanic where coolant was added; however, the failure returned. The vehicle was later taken to a dealer where the water pump was replaced. The contact stated that the failure recurred twice. The manufacturer was notified of the failure and the contact was given a case number. The vehicle was not repaired. The failure mileage was approximately 57,000.

NHTSA ODI 11627253

Nov 18, 2024Engine & coolingTransmission & drivetrainElectrical system

The contact owns a 2021 Ford Bronco Sport. The contact received notification of NHTSA Campaign Number: 24V267000 (ELECTRICAL SYSTEM, POWER TRAIN); however, the part to do the recall repair was unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the failure but was unable to confirm when the parts would become available. The contact stated while the vehicle was parked and attempting to start the vehicle, the vehicle failed to start. The contact stated that there was smoke coming from the engine compartment. The Fire Department was called, and the engine temperature was checked inside and outside the vehicle and it was determined that the engine had overheated. The vehicle was towed to the dealer to be diagnosed and it was determined that the water pump was leaking, the alternator had overheated, and the battery had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and a case was opened. The failure mileage was 32,468.

NHTSA ODI 11625926

Sep 20, 2024Engine & coolingTransmission & drivetrainEngine

The contact owns a 2021 Ford Bronco Sport. The contact stated that after refueling the vehicle, the vehicle failed to start up, with the check engine warning light illuminated. The vehicle was taken to the dealer where the fuel injector was replaced under warranty. The contact then stated that while driving at various speeds, the vehicle jolted forward upon depression of the accelerator pedal. There was no warning light illuminated. The vehicle was taken to the dealer where the contact was informed that the transmission, catalytic converter, and water pump needed to be replaced. The manufacturer was notified of the failure but offered no assistance. The vehicle had not been repaired. The failure mileage was approximately 55,000.

NHTSA ODI 11615564

Aug 21, 2024Engine & cooling

See attached document for complaint.

NHTSA ODI 11609908

Aug 9, 2024Engine & coolingElectrical systemLights

The contact owns a 2021 Ford Bronco Sport. The contact stated while driving 15 MPH, the vehicle lost motive power and stalled. The contact stated that the infotainment screen was erratic before the failure. The contact stated that the hazard lights were inoperable. The vehicle was towed to the local dealer, where it was diagnosed and determined that the water pump needed to be replaced. The mechanic informed the contact that the failure was due to a design flaw. The vehicle was not repaired. The manufacturer was not contacted. The failure mileage was approximately 61,000.

NHTSA ODI 11607586

May 20, 2024Engine & coolingFire

The contact owned a 2021 Ford Bronco Sport. The contact stated that while driving approximately 10 MPH the warning message "System Default, Battery" was displayed. After stopping to inspect under the hood the contact discovered smoke and flames were present coming from inside the engine compartment. The fire department was called to the scene and extinguished the fire. During the incident, the vehicle was destroyed. The vehicle was later towed to the local dealer who informed that the failure was caused by a faulty serpentine motor belt. The manufacturer was notified of the failure. A fire report was taken at the scene. The failure mileage was 142,000.

NHTSA ODI 11589602

Apr 11, 2023BrakesEngine & coolingFuel system

The contact owns a 2021 Ford Bronco Sport. The contact received notification of NHTSA Campaign Number: 21V922000 (Service Brakes, Hydraulic), 22V191000 (Engine and Engine Cooling) and 22V859000 (Fuel System, Gasoline) however, the parts to do the recall repairs were unavailable. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ODI 11516498

Mar 31, 2023Engine & coolingFuel system

The contact owns a 2021 Ford Bronco Sport. The contact stated that while driving at an undisclosed speed, the vehicle lost motive power, stalled, and then failed to restart. The loss of power train message was displayed. The vehicle was towed to the local dealer where it was diagnosed that the battery and control module needed to be reprogrammed. The vehicle was repaired. The manufacturer was not contacted. Additionally, the contact received NHTSA Campaign Number: 22V859000 (Fuel System, Gasoline); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was not made aware of the issue. VIN tool confirms parts not available. The failure mileage was approximately 3,500.

NHTSA ODI 11514767

Mar 23, 2023Engine & cooling

The contact owns a 2021 Ford Bronco Sport. The contact stated that while driving approximately 30 mph and making a left turn, there was an abnormal rattling noise. There were no warning indicator lights illuminated. The vehicle was towed to the local dealer where it was diagnosed the oil was not changed, and that the flex plate behind the engine had locked up. The flex flywheel broke and shattered. The pin broke and locked up the engine. The vehicle was not repaired. The manufacturer was contacted but no additional assistance was provided. The approximate failure was 85,000. The VIN was not available.

NHTSA ODI 11513390

Sep 16, 2022Engine & cooling

The contact owns a 2021 Ford Bronco Sport. The contact stated while driving 20-30 MPH, the accelerator pedal was depressed but the vehicle failed to respond as needed. The transmission warning light was illuminated. The vehicle was taken to an independent mechanic where an oil change was completed. The contact then drove across the street and parked the vehicle. Upon restarting the vehicle, the vehicle experienced a rough start. The contact was able to drive; however, the vehicle failed to respond while depressing the accelerator pedal. The check engine warning light was illuminated. A message indicating to park and restart the engine was displayed. The contact drove back to the independent mechanic where it was diagnosed that there was no engine oil. Additionally, the independent mechanic diagnosed that the engine had failed and needed to be rebuilt. The vehicle was not repaired. The contact became aware that the VIN was included in NHTSA Campaign Number: 22V191000 (Engine and Engine Cooling) which he associated with the failure. The dealer and the manufacturer were not notified of the failure. The failure mileage was approximately 31,000.

NHTSA ODI 11484802

Aug 12, 2022Electrical systemEngine & cooling

The contact owns a 2021 Ford Bronco Sport. The contact stated that the vehicle failed to start. There was no warning light illuminated. The vehicle was not drivable. The vehicle was towed to the local dealer, where it was diagnosed that the front belt and two coolant hoses needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 37,000.

NHTSA ODI 11478925

Aug 12, 2022BrakesEngine & cooling

The contact owns a 2021 Ford Bronco Sport. The contact received recalls notifications for NHTSA Campaign Numbers: 21V922000 (Service Brakes, Hydraulics) and 22V191000 (Engine and Engine Cooling). However, the parts to do the recalls repairs were not yet available. An unknown local dealer was contacted and confirmed that the parts for both recalls repairs were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for recalls repairs. The manufacturer was made aware of the issue. The contact had not experienced a failure. Parts distribution disconnect.

NHTSA ODI 11478935

Working with the data? Download all 664 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2021 Ford Bronco Sport Early Release verdict →