This bulletin supersedes 26-2194. Reason for update: update the Parts list to correct a part description " Loctite 638", update the claim quantity for the drain/fill plug, update the claim quantity of the wheel hub bolts (Corsair) and limited the parts list for Edge/Nautilus to only the rear drive unit fluid. Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: Shudder chatter condition, most noticeable at low speeds turning No relevant diagnostic trouble codes (DTCs) present This may be due to internal rear drive unit (RDU) fluid contamination.
full bulletin at NHTSA ↗2023 Ford Bronco Sport powertrain problems
severe Owners of the 2023 Ford Bronco Sport have filed 19 NHTSA complaints about the powertrain at roughly $2,500 to repair (U.S. federal records, as of August 2026). Source: NHTSA Office of Defects Investigation. See powertrain across all vehicles →
Complaints
19
Recalls
0
Avg fix
$2,500
| Model year | powertrain complaints |
|---|---|
| 2021 Bronco Sport | 154 |
| 2022 Bronco Sport | 55 |
| 2023 Bronco Sport (this page) | 19 |
| 2024 Bronco Sport | 17 |
1crash
1fire
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
Some 2020-2026 Corsair/Escape, 2021-2026 Bronco Sport, and 2022-2026 Maverick vehicles equipped with an 8F35 transmission may exhibit a shudder condition, most noticeable at speeds below 60 mph (100 km/h), with no relevant diagnostic trouble codes (DTC) stored in the powertrain control module (PCM). Sometimes, this may be perceived/felt as an engine misfire. This may be due to the torque converter. If Pinpoint Test K: Torque Converter Clutch Operation in Workshop Manual (WSM), Section 307-01 > Diagnosis and Testing > Diagnosis by Symptom directs to replace the torque converter, remove and replace the torque converter and torque converter seal. Refer to WSM, Section 307-01 > Removal and Insta
full bulletin at NHTSA ↗Some 2020-2026 Corsair/Escape, 2021-2026 Bronco Sport, and 2022-2026 Maverick vehicles equipped with an 8F35 transmission may exhibit a shudder condition, most noticeable at speeds below 60 mph (100 km/h), with no relevant diagnostic trouble codes (DTC) stored in the powertrain control module (PCM). Sometimes, this may be perceived/felt as an engine misfire. This may be due to the torque converter. If Pinpoint Test K: Torque Converter Clutch Operation in Workshop Manual (WSM), Section 307-01 > Diagnosis and Testing > Diagnosis by Symptom directs to replace the torque converter, remove and replace the torque converter and torque converter seal. Refer to WSM, Section 307-01 > Removal and Insta
full bulletin at NHTSA ↗This bulletin supersedes 25-2627. Reason for update: To add a Step to reprogram the all-wheel drive (AWD) module for Bronco Sport vehicles. Some of the vehicles listed in the Model statement above may exhibit all of the following conditions: Shudder chatter condition, most noticeable at low speeds turning No relevant diagnostic trouble codes (DTCs) present This may be due to internal rear drive unit (RDU) fluid contamination.
full bulletin at NHTSA ↗Some 2023-2024 Bronco Sport vehicles equipped with a 1.5L engine may exhibit an illuminated powertrain malfunction (wrench) indicator with diagnostic trouble code (DTC) P130D stored in the PCM. This may be caused by poor quality fuel being used in the vehicle. As stated in the Owner's Manual under FUEL QUALITY - Choosing the Right Fuel, use of any fuel for which the vehicle was not designed can impair the emission control system, cause loss of vehicle performance, and cause damage to the engine. Do not use: diesel fuel, fuels containing kerosene or paraffin, fuel containing more than 15% ethanol or E85 fuel, fuels containing methanol, fuels containing metallic-based additives, including ma
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2023 Bronco Sport powertrain cluster shows widespread transmission defects and electrical failures. Owners consistently report violent or rough shifts, especially at low speeds and 30–50 mph, with hesitation or over-revving before engagement. Cold weather makes the problem worse. Several owners describe the accelerator not responding—pedal pressed but vehicle won't move until they release and reapply.
More severe failures include vehicles stalling on highways, unable to shift out of Park, and entering limp mode with warning messages. One owner was stranded for 30–45 minutes on a busy interstate after the transmission locked up. Another experienced a small fire from the front of the vehicle coinciding with 4WD disengaging unexpectedly.
A service manager told one owner their eight-speed EcoBoost transmission was assembled missing vital internal parts, with no Ford workaround in place. Another owner's transmission ran on contaminated fluid for 20,000 miles before damage was detected; Ford repaired it under warranty but refused a full replacement despite the owner's concerns about durability.
Electrical gremlins compound the problem: Apple CarPlay drops repeatedly, keyless entry fails intermittently, and rear hatch entry hasn't worked for a year. Ford applied multiple software updates without lasting fixes. Dealers often cannot diagnose transmission issues, and warranty service spans months. NHTSA campaigns 24V267000 and 25V158000 have been issued, but repair parts are delayed or unavailable.
Same Ford Bronco Sport powertrain reports on nearby years: 2021 · 2022 · 2024
Failure modes owners describe
Rough, delayed, or jerky transmission shifts
Transmission shifts harshly between gears, especially at low speeds (1st–3rd gear) and 30–50 mph. Some owners report the transmission hesitates to engage or over-revs before catching gear. Cold weather worsens the problem. Affects merging and turning safety.
When: Intermittent; present from new in some cases; worsens in cold weather
Symptoms owners cite: Violent jerking or rough shifts between gears; Hesitation or over-rev before engaging gear; Clutch feels as if it does not fully engage; Uneven RPM fluctuations during acceleration
Repairs/costs cited: Multiple owners report transmission repairs or replacements under warranty. One owner had transmission repaired at 20k miles after contaminated fluid was discovered; another waiting 3+ months for transmission replacement. Dealers have applied software updates without resolving issue.
Recalls/TSBs owners mention: Software updates to transmission control (no lasting fix reported). Related to NHTSA Campaign 24V267000 (Electrical System, Powertrain).
Transmission fails to respond to accelerator input
Vehicle does not move when accelerator is pressed; driver must release and reapply pedal for vehicle to respond. Occurs during merging and highway passing, creating safety hazard.
When: Intermittent, multiple occurrences
Symptoms owners cite: Accelerator pedal pressed but vehicle does not move; Must release and re-press pedal for transmission to engage; Occurs during critical maneuvers (merging, highway passing)
Repairs/costs cited: Two different Ford dealers unable to diagnose. Transmission software updated without resolving issue.
Recalls/TSBs owners mention: Software updates (no resolution)
Powertrain malfunction with limp mode and inability to shift
Vehicle enters reduced-power or limp mode, cannot shift out of Park, and stalls. Warning messages include 'Engine system has detected a fault,' '4 wheel drive disabled,' and 'Powertrain Malfunction/Reduced Speed.' One incident left owner stranded on highway.
When: At various highway speeds; mileage ~1,800–25,000 miles
Symptoms owners cite: Engine fault warning displayed; 4WD disengages or warning light illuminates; Transmission cannot shift out of Park; Vehicle stalls or cannot move; Loud clanking or abnormal noises from front
Codes mentioned: Powertrain Malfunction / Reduced Speed (as reported), Engine System Fault (as reported)
Repairs/costs cited: One vehicle with smoke/small fire from front; not diagnosed or repaired at dealer. Recall parts (NHTSA 24V267000) not yet available.
Recalls/TSBs owners mention: NHTSA Campaign 24V267000 issued (Electrical System, Powertrain) but repair parts unavailable or delayed.
4WD engages and disengages unexpectedly
Four-wheel drive system activates and deactivates on its own while driving. One owner heard loud clanking from front tires and observed smoke and small fire from front of hood.
When: While driving at undisclosed speed; occurred around 25,000 miles
Symptoms owners cite: 4WD engages and disengages independently; Loud clanking noise from front tires; 4WD warning light illuminates; Smoke and small fire from front of vehicle
Repairs/costs cited: Vehicle towed to dealer but not diagnosed or repaired.
Recalls/TSBs owners mention: NHTSA Campaign 24V267000 issued; repair parts not available.
Battery defect causing starting failure and Auto Stop/Start malfunction
Vehicle fails to start or requires jumps. Auto Stop/Start feature malfunctions intermittently even after battery recharge. Dealer diagnosed incorrect cold cranking amp battery installed at assembly.
When: Early in ownership (~1,800 miles); recurring same day after dealer service
Symptoms owners cite: Vehicle fails to start; Auto Stop/Start feature inoperable or intermittent; No warning light illuminated in some cases
Repairs/costs cited: Battery recharged at dealer; failure recurred same day. Related to incorrect factory-installed battery with insufficient cold cranking amps.
Recalls/TSBs owners mention: NHTSA Campaign 25V158000 (Powertrain, Electrical System) issued; VIN not included in recall notice.
Damaged transmission fluid and internal wear from delayed diagnosis
Owner reported contaminated transmission fluid discovered at 20,000 miles. Dealer repaired damage under warranty but refused full transmission replacement despite evidence of long-term contamination and internal wear.
When: Detected at 20,000 miles; vehicle operated with contaminated fluid from unknown starting point
Symptoms owners cite: Contaminated transmission fluid; Major internal transmission damage
Repairs/costs cited: Partial repair completed under warranty. Owner concerns about long-term durability of remaining transmission components after extended run with contaminated fluid.
Recalls/TSBs owners mention: Partial repair under warranty; corporate refused full transmission replacement per owner's account.
Intermittent electrical/infotainment failures
Apple CarPlay drops connection or does not recognize phone despite updated software on both devices. Seat memory, keyless entry, and rear hatch keyless entry work intermittently or not at all. Steering wheel controls and stereo display malfunction. Ford has applied multiple software updates with temporary fixes.
When: Intermittent throughout ownership; rear hatch keyless entry non-functional for almost one year
Symptoms owners cite: Apple CarPlay drops connection or fails to recognize phone; Seat memory preset not working; Keyless entry intermittently inoperable; Rear hatch keyless entry non-functional; Stereo display does not show proper data; Steering wheel channel change button does not respond
Repairs/costs cited: Multiple software updates applied; features work temporarily then fail again.
Recalls/TSBs owners mention: Software updates (repetitive, no lasting resolution)
Serpentine belt loose causing overheating and subsequent transmission damage
Belt installed loose at factory, causing engine overheating and requiring roadside tow. Months later, vehicle developed loud clanging and jerking when shifting, requiring transmission replacement.
When: Belt issue February 2026; transmission issue April 2026 (on 3-year-old vehicle)
Symptoms owners cite: Loose serpentine belt; Engine overheating; Loud clanging sounds when putting vehicle in gear; Jerking motion during gear engagement
Repairs/costs cited: Serpentine belt replaced; transmission replacement required. Owner reports difficulty sourcing rebuilt transmission due to high demand.
Recalls/TSBs owners mention: No recall issued despite multiple similar reports from other Bronco Sport owners.
Eight-speed transmission assembled without vital components
Service manager informed owner that their eight-speed EcoBoost transmission was assembled missing critical internal components. Ford has no workaround or plan to address the defect. Transmission jerks, fails to shift into gear, and has intermittent Park/Reverse issues.
When: Identified during warranty service; vehicle in shop for most of 4 months
Symptoms owners cite: Transmission jerking; Failure to shift into gear; Intermittent Park function; Intermittent Reverse shift
Repairs/costs cited: Vehicle under warranty repair for extended period. Owner cannot drive vehicle or transfer insurance while making payments.
Recalls/TSBs owners mention: Ford acknowledged assembly defect (missing vital parts) but provided no fix or timeline per owner account.
Synthesized from 19 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
Transmission jerking or not shifting into gear and intermittent park in reverse shifting inoperable. Also, my car has been in the shop.Under warranty repair for most of the last four months. , we are still required to make payments on a vehicle.And cannot even transfer insurance from that vehicle to another temporarily.Because of the sales contract. The service manager recently told me that our…
Had powertrain trouble with your 2023 Ford Bronco Sport?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2023 Ford Bronco Sport?
It's a meaningful issue. 19 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain typically fail?
Based on the 19 complaints filed, powertrain issues most often appear around 23,267 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2023/Ford/Bronco Sport.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.